A Cook County jury on Friday found Arthur Hilliard guilty of killing 21-year-old Diamond Turner, whose body was discovered in a South Side alley in 2017. The decision caps a years-long investigation that Turner’s family and activists say was dragged out by slow-moving forensic work.
Jurors convicted Hilliard on every count, including murder and concealing a homicide, according to local coverage. ABC7 Chicago reports that he is due back in court later this month for post-trial motions.
What Prosecutors Say Happened
Turner’s body was found in March 2017, stuffed inside a city garbage can in a Grand Crossing alley. An autopsy ruled her death a homicide caused by asphyxia and blunt-force trauma. Earlier coverage laid out witness accounts placing Turner at an apartment Hilliard managed on the night she vanished. Those medical findings and witness statements were detailed by the Chicago Sun-Times.
DNA Testing And The Arrest
Prosecutors have said DNA evidence ultimately linked Hilliard to the scene and led detectives to arrest him. Authorities and reporters have noted that the case sat in limbo while analysts worked through forensic testing at the state crime lab. Local investigative reporting has highlighted how a backlog there slowed the case for years before the DNA match came through, a timeline the backlog-plagued lab is by now sadly famous for. CBS Chicago has outlined the DNA process and the delays that held up charges.
A Possible Pattern And Prior Charges
Hilliard had already surfaced in another death investigation, where he was implicated in concealing a victim’s remains, and prosecutors and earlier reporting say he has drawn scrutiny in additional unsolved killings. He either pleaded or was found guilty in a separate concealment case tied to a 2018 death and served a short sentence. Those prior charges and his record in that case were reported by the Chicago Sun-Times when the Turner case moved forward.
Family Response
Turner’s relatives met the guilty verdict with a mix of relief and anger over how long it took to get there. In comments quoted by local outlets, an aunt described the wait for charges as “three long years” and said the conviction provides at least some sense of justice. That reaction was reported by CBS Chicago.
Legal Status And Next Steps
Hilliard now stands convicted on counts that include murder and concealing a homicide. Court records and coverage indicate he will return later this month for post-trial motions, with sentencing to follow. ABC7 Chicago notes the calendar entry for the post-trial work and reports that a sentencing date has not yet been set.
Why Investigators Are Watching Other Cold Cases
Hilliard’s arrest and now his conviction have renewed attention on a cluster of unsolved strangulations and asphyxiations that investigators and nonprofits had already flagged for deeper review. The Murder Accountability Project, which examined a group of similar unsolved killings, has said the Turner arrest was the first case to emerge from that larger pattern and that law enforcement agencies were rechecking evidence in other files. Those findings were laid out by the Murder Accountability Project.
The conviction closes one chapter in a case that families say illustrates both the power of steady reporting and the very human cost of forensic backlogs. As the legal process grinds on, prosecutors, defense attorneys, and court staff will be the next voices to watch when post-trial filings land and a sentencing date finally appears on the docket.
