Solved Case — Convicted The Murder of Macy Grace Ditty...
View Full Case|
Victim
Dianna Brice — 14 Weeks Pregnant
|
Date of Murder
March 30, 2021
|
Location
Southwest Philadelphia, PA
|
Cause of Death
Multiple Gunshot Wounds to Head
|
|
Defendants
Justin Smith — Tylydia Garnett
|
Smith Status
Awaiting Trial — Charges Filed 2021
|
Investigating Agencies
Philadelphia PD — Upper Darby PD — FBI
|
Garnett Status
Convicted — Sentenced 2023
|
| Name | Dianna Brice |
| Age | 21 |
| Hometown | Lansdowne / Upper Darby, PA |
| Pregnancy | 14 weeks (~3 months) |
| Children | One son — age 4 at time of death |
| Parents | Betty Cellini & Gary Brice Sr. |
Dianna Brice was 21 years old. She was the daughter of Betty Cellini and Gary Brice Sr., raised in the Upper Darby and Lansdowne areas of Delaware County, Pennsylvania, just outside Philadelphia. Her mother described her as her rock; the two were close enough that Dianna confided in her about almost everything in her life, and the two often did errands together, including the laundromat trip on the day she disappeared. Dianna was a single mother to a four-year-old son and was approximately 14 weeks pregnant with her second child at the time of her death.
She had been dating Justin Smith for about six months before her death, after meeting him through mutual friends. Her family knew Smith. Her mother had spoken to him on the morning of the day Dianna disappeared. The relationship had been strained in the days before March 30, 2021, with text messages later recovered by investigators showing Smith had been accusing Dianna of cheating on him.
Dianna's son was four years old when his mother was killed. He is now eight. Her family has spoken often, in the years since her death, about the small boy who kissed his mother's urn every morning and asked every night when she was coming home. Her family has continued to live for him.
On the morning of Tuesday, March 30, 2021, Dianna Brice was at K Laundry on the 500 block of Church Lane in Lansdowne, Pennsylvania, doing laundry with her mother Betty Cellini. At approximately 11:30 a.m., Dianna's boyfriend Justin Smith picked her up at the laundromat. The couple intended to drive to a pharmacy in the Kensington section of Philadelphia. According to Cellini's later account, Dianna and Smith argued during the drive, and Dianna got out of his vehicle in West Philadelphia. At approximately 1:00 p.m., Cellini called Dianna to tell her the laundry was finished. Dianna told her mother she had not made it to the pharmacy and would meet her at home. That call, at approximately 1:00 p.m. on March 30, 2021, was the last time anyone in Dianna's family heard her voice.
Investigators later established that Dianna re-entered Smith's Ford Fusion at some point during the afternoon. Surveillance footage and physical evidence indicate Smith shot Dianna multiple times in the head while she was inside the vehicle. The killing of Dianna Brice and her unborn child took place inside the car. Smith was at the wheel.
After the shooting, Smith contacted 24-year-old Tylydia Garnett, a friend or associate, who came to assist him. Surveillance video later recovered by Philadelphia detectives captured Garnett purchasing gasoline and bringing it to a garage Smith was using. Garnett was then captured on video helping Smith load a heavy object, later determined to be Dianna's body, into a vehicle. Smith and Garnett drove to a wooded area in the 5800 block of Eastwick Avenue in Southwest Philadelphia, where Dianna's body was placed in the woods. Smith then drove his Ford Fusion to the area of Florence Avenue and Cobbs Creek Parkway, approximately one mile away, where he set the vehicle on fire. At approximately 5:30 p.m. on March 30, 2021, Philadelphia Fire Department personnel responded to a vehicle fire and discovered the burning Ford Fusion. Smith's wallet and car keys were recovered nearby. After the fire, Garnett drove Smith out of the state to Florida.
By 11:35 p.m. on March 30, 2021, Cellini, alarmed that her daughter had never come home, drove to the Upper Darby Police Department and filed a missing person report. Investigators began retracing Dianna's movements and tracking her cell phone. Six days later, on April 5, 2021, Philadelphia Police recovered Dianna Brice's body from a wooded area on the 5800 block of Eastwick Avenue, less than a mile from the location where Smith's Ford Fusion had been found burning. The medical examiner determined she had been shot multiple times in the head; her unborn child died in the same attack.
An arrest warrant was issued for Smith on April 9, 2021. He had already left Pennsylvania. Garnett was arrested in Florida three days later, on April 12, 2021, and returned to Philadelphia. Smith remained a fugitive for nearly four years. He was located and arrested in Atlanta, Georgia on March 9, 2025.
The Upper Darby Police Department took the initial missing person report from Betty Cellini at 11:35 p.m. on March 30, 2021. Within hours, the case was being worked jointly with the Philadelphia Police Department, where the burning Ford Fusion registered to Justin Smith had been recovered earlier that evening at Florence Avenue and Cobbs Creek Parkway. Investigators recovered Smith's wallet and car keys near the burned vehicle. Cellini's account of the morning, the laundromat pickup, the argument, and the 1:00 p.m. phone call gave detectives a defined window of approximately twelve hours during which Dianna had been alive and in Smith's company.
Detectives obtained Dianna Brice's phone records and pinged her cell phone over the days that followed. The pings led investigators to the 5800 block of Eastwick Avenue in Southwest Philadelphia, less than a mile from the burned car. On April 5, 2021, six days after Dianna's disappearance, her body was recovered from a wooded lot at that location. The medical examiner determined she had been shot multiple times in the head. She was approximately 14 weeks pregnant; her unborn child died in the same attack. The proximity of the body to the burned car established the geographic core of the crime.
The investigation that followed was constructed largely from surveillance video recovered from along the route between Lansdowne and Southwest Philadelphia. Cameras documented Smith's vehicle traveling, the activity at a garage on the 1900 block of E. Westmoreland Street that Smith was using, and the second vehicle driven by Tylydia Garnett. Garnett, then 21, was captured purchasing gasoline at a service station and bringing it to the garage. She was captured loading a heavy object that investigators identified as Dianna's body into her vehicle. She was captured driving in convoy with Smith to the wooded area on Eastwick Avenue, then driving in convoy again to the location where Smith set his Ford Fusion on fire. Phone records confirmed the communication between Smith and Garnett during the relevant hours. Text messages between Dianna and Smith from the days before her death documented Smith's accusations of infidelity and the deteriorating state of the relationship.
An arrest warrant for Smith was issued on April 9, 2021. He was no longer in Pennsylvania. Tylydia Garnett was arrested three days later, on April 12, 2021, in Florida and returned to Philadelphia, where she was held pending trial on charges of arson, abuse of corpse, tampering with evidence, possession of an instrument of crime, conspiracy, and criminal use of a communications facility. The Philadelphia District Attorney's Office, ultimately led on this case by the prosecutors who handled Garnett's plea before Common Pleas Judge Rosemarie DeFino, opened parallel tracks: full prosecution of Garnett as accessory and a sustained fugitive search for Smith.
In November 2021, the FBI's Philadelphia Violent Crimes Task Force joined the search for Smith. The reward for information leading to his arrest was increased from the Philadelphia Police Department's initial $20,000 to $25,000 with FBI participation. The FBI documented Smith's known connections to Greensboro, North Carolina, where he was born; New Castle, Delaware; the Little Haiti neighborhood of Miami, Florida; and Atlanta, Georgia. On August 10, 2023, a federal warrant for unlawful flight to avoid prosecution was issued, formally engaging federal resources in the search.
In September 2023, with Smith still at large, Tylydia Garnett pleaded guilty before Judge DeFino. Cellini took the stand and pleaded with Garnett and her family in the courtroom to turn Smith in. Garnett was sentenced to 11½ to 23 months in prison followed by five years of probation. Smith remained a fugitive for an additional eighteen months. On March 9, 2025, Atlanta police conducted a routine traffic stop on the 800 block of Oak Street for an expired vehicle registration. The driver fled, first by car and then on foot, before being apprehended. The driver was identified as Justin Smith. He was held on the outstanding Philadelphia murder warrant and extradited to Pennsylvania. He appeared in court for the first time on May 14, 2025, and waived his preliminary hearing. He is being held without bail pending trial.
Federal Bureau of Investigation — Philadelphia Field Office historical advisory documenting the four-year fugitive search for Justin Smith and the $25,000 reward offer for information leading to his arrest. The advisory remains a matter of public record from the period of the search, prior to Smith's apprehension in Atlanta on March 9, 2025.
View FBI Philadelphia Advisory →Two defendants have been charged in connection with the death of Dianna Brice. Justin Smith, her boyfriend, was charged on April 9, 2021 with murder of Dianna and her unborn child and remains in custody awaiting trial. Tylydia Garnett, who assisted Smith in disposing of Dianna's body and burning his vehicle, was arrested in April 2021, pleaded guilty in September 2023, and was sentenced to 11½ to 23 months in prison followed by five years of probation.
Dianna Brice was 14 weeks pregnant with her boyfriend's child when she was killed. Pregnancy is a recognized statistical predictor of lethal violence in domestic relationships. Researchers at the Centers for Disease Control and Prevention and at university-based domestic violence research centers have documented that homicide is among the leading causes of death for pregnant women in the United States, and that the partner is the offender in the majority of those cases. The risk peaks in the second trimester, the period during which Dianna was killed, and is especially elevated in relationships marked by accusations of infidelity, controlling behavior, or financial conflict in the weeks before the killing.
Text messages between Dianna and Justin Smith in the days before her death documented Smith accusing Dianna of cheating on him. The pattern is one of the most consistent precursors to intimate partner homicide identified in domestic violence research: an offender's growing certainty, often unsupported by evidence, that the partner has been unfaithful. The pregnancy itself, in such relationships, can act as an accelerant rather than a protective factor. Dianna's death is statistically and behaviorally consistent with the broader pattern.
Investigators determined that Dianna was shot multiple times in the head while seated inside Justin Smith's Ford Fusion. The vehicle is one of the most common locations for intimate partner homicide, particularly when the victim is in the act of leaving or has recently attempted to leave the relationship. Cars provide privacy, mobility, and immediate proximity. They also remove the victim from any nearby support network. The combination is one of the highest-risk environments documented in intimate partner homicide research.
The decision to set the vehicle on fire after the killing is significant. Vehicle arson in homicide cases serves multiple investigative-disruption functions: destruction of biological evidence, destruction of fingerprints, and elimination of the immediate forensic signature of the shooting. The fact that Smith's wallet and car keys were found near the burning vehicle, however, suggests a hurried departure rather than a methodical concealment. The arson disrupted some forensic recovery but left enough trace and contextual evidence for the case against Smith to be built on phone records, surveillance video, and Garnett's documented assistance.
Tylydia Garnett's documented role in the hours after the killing was substantial. She purchased gasoline. She loaded Dianna's body. She drove behind Smith to the body's disposal site. She drove behind him again to the site where he burned his vehicle. She drove him out of state. She told the sentencing court that she did so under threat. The sentencing judge accepted that account in part and rejected it in part, sentencing Garnett to a custodial term while expressing direct frustration that she had not gone to police rather than assisting the killer.
Accessory-after-the-fact participation in intimate partner homicide is documented in domestic violence and homicide research. Accessories are sometimes themselves victims of the principal offender, sometimes loyal associates, and sometimes individuals who participate under genuine threat and sometimes in pursuit of perceived self-interest. The legal architecture in Pennsylvania separates these motivations only partially; what mattered at sentencing was that Garnett's actions, regardless of her stated fear, allowed Smith to evade capture for almost four years. As Judge DeFino said: she let him get away.
Justin Smith remained at large for nearly four years after Dianna's death. Fugitives who successfully evade capture for that length of time typically do so by leveraging existing geographic and social networks rather than by going entirely to ground. Smith's known connections, documented in the FBI advisory, mapped exactly onto that pattern: Greensboro, North Carolina, where he was born; New Castle, Delaware; the Little Haiti neighborhood of Miami, Florida; and Atlanta, Georgia. Each location provided the option of housing, employment, and concealment within communities where Smith had pre-existing ties.
The duration of the manhunt also reveals a recognized limit of the federal-state partnership in fugitive recovery. Even with FBI Violent Crimes Task Force involvement and a $25,000 reward, locating a fugitive who is willing to maintain a low profile across multiple jurisdictions is a function of luck and routine policing as much as of dedicated investigative effort. In the end, what brought Smith into custody was an Atlanta traffic stop for an expired vehicle registration, the most ordinary of policing functions. The precipitating cause of his apprehension was administrative; the investigative architecture that ensured he was held on murder charges had been in place for four years.
Dianna's body was recovered from a wooded lot on the 5800 block of Eastwick Avenue six days after her disappearance, after investigators tracked her cell phone to the location. The investigative use of cellular pings to locate a missing person whose body has not yet been found is a defining technology of modern homicide investigation. Phones travel with their carriers and continue to register with cell towers until they are powered off, destroyed, or run out of battery. In Dianna's case, the phone remained traceable long enough to establish a search radius that placed investigators within recovery range of her remains.
The decision by Smith and Garnett to place Dianna's body within a mile of the location where Smith burned his vehicle compressed the geography of the crime in ways that ultimately worked against the offenders. A body and a burned vehicle within a one-mile radius of one another, both linked to a missing person reported the day before, established a coherent crime-scene cluster that Philadelphia detectives could process as a single unit. Had the body been moved further from the burned vehicle, the investigative timeline could have been substantially longer.
The Brice family has lived through a sequence almost unique in modern American homicide: a four-year fugitive search during which the principal suspect remained at large, the conviction and sentencing of the accessory in the meantime, the eventual apprehension after years of waiting, and a continuing wait for a trial that has not yet occurred. Each phase of that sequence has its own emotional and legal architecture, and the cumulative effect on a victim's family is a particular kind of suspended grief.
Dianna's mother Betty Cellini, her father Gary Brice Sr., her uncle Sean Miller, and other members of the family have spoken in court and on record at every stage of the process. They have done so in service of one specific goal: ensuring that Dianna and her unborn child are not forgotten while the institutional process runs its course. As of the date of publication, that process is incomplete. The trial is the final phase. The family has stated it intends to be present for every day of it.
Dianna Brice was 21 years old. She was a mother. She was someone's daughter, and she was someone's granddaughter, and she was the rock her own mother described her as in court four years after her death. She had a four-year-old son who is now eight, and a baby on the way she was 14 weeks into carrying. She was at the laundromat with her mom on the morning of March 30, 2021, the way a 21-year-old mother of one might be on a Tuesday, getting things done, getting ready for the rest of her week.
Her mother Betty Cellini called her at one in the afternoon to tell her the laundry was done. Dianna told her she had not made it to the pharmacy yet and that she would meet her at home. That sentence, said in passing on a phone call between a mother and a daughter on a Tuesday, has been the last sentence Betty Cellini ever heard her daughter say. Five and a half years now, and counting.
Dianna was found six days later in a wooded lot off Eastwick Avenue, a mile from where her boyfriend's burned-out Ford Fusion had been recovered. She had been shot in the head multiple times. Her unborn child died with her. The man charged with her murder ran for nearly four years before he was caught at an Atlanta traffic stop for an expired registration, the kind of thing he would have known to handle if his life had not been organized around remaining out of sight. The woman charged with helping him hide her body and burn his car pleaded guilty in 2023 and served her sentence.
Through all of it, Dianna's family has been in courtrooms. Her mother. Her father. Her uncle. They have held photographs of her. They have asked the people in the position to do something to do it. Betty Cellini took the witness stand at Tylydia Garnett's sentencing and asked the woman who had helped move her daughter's body to "please do the right thing and turn him in." That sentence is in the public record. So is the small bedroom of a four-year-old boy who, in the years after his mother died, kissed her urn every morning before school and asked every night when she was coming home.
As of the date of publication, Justin Smith is in custody at the Philadelphia Department of Prisons, awaiting trial on charges of murdering Dianna and her unborn child. The trial has not yet begun. The Brice family has said, plainly, that they will be in the courtroom every day of it.
Dianna deserved the boring Tuesday afternoon she was supposed to have. She deserved to come home with her laundry. She deserved to give birth to her second child and watch both her children grow up. She deserved to grow old. She got none of it. She got six minutes, somewhere, in a Ford Fusion, with the man whose child she was carrying. She is remembered here because her life mattered far more than the way her life ended, and because the small boy in Pennsylvania who asks every night when his mother is coming home is going to keep needing the answer to be that she is here.
Solved Case — Convicted The Murder of Macy Grace Ditty...
View Full CaseMurder Case — Jackson, Mississippi The Murder of Tasia Fortune...
View Full CaseSerial Killer Harvey Marcelin was convicted of murdering three women...
View Full Case