Green had allegedly been the one to contact Brown about the drugs but police said a physical altercation broke out between them when they met.
Jacquerious told investigators that he got out of the car when the fight broke out but he was shot in the chest by Brown.
He said Green retaliated and allegedly shot Brown twice in the lower body.
Police said the three men then fled the scene in their car. Michael, who was the driver, allegedly dropped Green at an unknown location before rushing Jacquerious to hospital to be treated for his gunshot wound.
Police said Michael then also fled. Green allegedly took Brown’s backpack and gun from the scene of the shooting.

Brown’s family issued a statement via their attorney Lee Merritt calling for the Dallas Police Department to turn over the investigation to an alternate agency.
‘This family and their representatives have consciously avoided speculating about law enforcement involvement in this tragedy, however, due to the proximity of this murder with the trial of Amber Guyger – rumors abound.
‘It will be nearly impossible to conduct a reliable investigation in a climate where the investigating agency has been implicated in the murder itself.
‘That implication naturally stems from a trial where a Dallas Police officer was convicted of murder and other DPD officers were shown to have participated in condemnable behavior in destroying evidence and interfering with the investigation.’
Merritt had earlier said Brown was due to be one of the first witnesses to testify in an upcoming wrongful death lawsuit brought against the Dallas Police Department by Jean’s family.
Jean’s family is suing the city after claiming that police failed to properly train Guyger before she shot him dead in his own apartment.
Merritt said he was reluctant to testify during Guyger’s high-profile trial and had repeatedly expressed concerns for his safety.
Brown had narrowly escaped death in November last year following a shooting outside a Dallas nightclub. He was shot in the foot and his 25-year-old friend was killed.
Merritt has previously said Brown feared the people behind the shooting continued to mean him harm.
He said Brown fled Texas for California to avoid testifying at Guyger’s trial.
Merritt said Brown was in California on the first of Guyger’s trial but that prosecutors allegedly threatened to issue a warrant for his arrest if he didn’t show up the following day.
‘He got on a plane and came straight from the airport to the courthouse,’ Merritt said. ‘I believe he met with the judge in her chambers (on the record) and reiterated his concern about testifying.’

He went on to testify that he heard two gunshots and a commotion in the hallway the night Guyger shot dead Jean.
Brown started crying when he was asked about the victim.
He said he had met Jean for the first time on the day he was killed when police knocked on both of their doors about a noise complaint, even though there wasn’t anything loud going on in their apartments.
Brown said he thought it might have been because both he and Jean smoked marijuana and the smell sometimes drifted into the hallway.

Merritt pointed out that the court has mechanisms to limit the exposure of witnesses and more should have been done to protect Brown given his concerns.
‘(The court) took steps to cut off cameras and instruct media not to report on an undercover cop that testified in Guyger’s trial,’ Merritt said.
‘Why weren’t the same measures taken to protect Joshua Brown? Brown’s testimony was powerful but it was also duplicative. Nothing he testified to couldn’t have been brought in by other witnesses.
‘It wasn’t worth his life.’
Merritt has previously called Brown’s death an ‘assassination’.
He has also refused to rule out that police were somehow involved in the shooting that took Brown’s life.
‘I am not saying that law enforcement played a role in the murder of Joshua Brown. I am saying that the possibility of law enforcement involvement cannot be ruled out at this point,’ he said.
‘Anyone who is murdered days after testifying in a murder trial naturally implicates the person or persons he testified against in the murder. There are no suspects and no leads currently in the murder of Joshua Brown. That means investigators are responsible for turning over every stone
‘Moreover, the people responsible for investigating this case can not be the same people implicated by the proximity to the trial. In other words, Dallas PD should not be investigating this murder. The case should be turned over to an outside agency like the sheriff’s department, FBI or DOJ.’