Dallas police have cited a drug deal gone bad in the shooting death of a key witness in the Amber Guyger murder trial, according to US media reports.
Joshua Brown was shot dead on Friday.
Two suspects, identified by the BBC as Jacquerious Mitchell and Michael Mitchell are in custody, while a third suspect, Thaddeous Green, is at large.
The trio allegedly visited Joshua Brown to buy marijuana when shooting started after an altercation, media reports quoting Dallas officials say.
Quoting the police, The Dallas Morning News said the three suspects were in the same car when they arrived at Brown’s apartment complex Friday night.
Authorities said they found 12lb of marijuana, THC cartridges and $4,000 cash in Brown’s apartment after obtaining a search warrant.
Law enforcement officials denied speculation by community leaders and others that the murder of the key witness was related to the Amber Guyger trial and Dallas cops were somehow involved.
“I assure you that is simply not true, and I encourage those leaders to be mindful of their actions moving forward because their words have jeopardised the integrity of the city of Dallas as well as the Dallas Police Department,” Dallas assistant police chief Avery Moore told a news conference Tuesday.
USA Today reported that Joshua Brown’s family want an independent investigation into his death.
Brown was found dead in a parking lot two days after Amber Guyger was sentenced to 10 years in prison for the fatal shooting of Saint Lucian national, Botham Jean.
Guyger, an off duty Dallas police officer at the time, claimed she mistook Jean’s apartment for hers.
They lived on different floors of the same apartment complex.
Guyger was fired as a cop and indicted for murder.