Joshua Xavier Brown, 28, of Jacksonville, Florida, was fatally shot on October 4, 2019, in the parking lot of his apartment complex in Dallas, Texas. Brown had testified as a key witness in the murder trial of former Dallas police officer Amber Guyger just days before his death, but investigators said his killing was not related to that testimony and instead stemmed from a drug deal gone bad.

Three suspects were identified in connection with Brown’s death: Thaddeous Green, Michael Mitchell, and Jacquerious Mitchell. Two of the men named were arrested and charged; the third remained pending. The sequence of the shooting and the links to the suspects remain central to the case files, and the circumstances surrounding the investigation have prompted questions about how the Dallas Police Department handled the matter.

Anyone who knew Joshua, witnessed the shooting on October 4, 2019, or has information about the suspects is asked to come forward.