In the early hours of June 29, 2025, Black male, Marquis Darrnell Green, 41, a man from San Antonio, stepped out into the breezeway of an East Side apartment complex in the 1500 block of Upland Drive. What began as a tense argument with another man over suspected stolen property spilled from an apartment doorway into the corridor, where a struggle over a handgun unfolded.
When the fight ended, Marquis Darrnell Green, 41, lay mortally wounded from a gunshot to the chest; he was pronounced dead at the scene as officers arrived before dawn and began piecing together how a private dispute had turned fatal.
By the next day, detectives had secured an arrest. According to an affidavit and court records, Gregory Bernard Cunningham Jr., 34, was identified as the man who confronted Marquis Darrnell Green, 41, during the quarrel. A witness who identified herself as the victim's significant other told investigators that Cunningham—described as a relative of hers—believed Marquis Darrnell Green, 41, had taken his belongings. Surveillance video gathered by investigators showed the men moving into the breezeway, vying for control of the gun before Cunningham gained the upper hand and fired. He was arrested on Sunday, charged with murder, and booked into the Bexar County jail on a $250,000 bond while awaiting indictment.
The killing was first reported as a shooting with the suspect fled; only later did authorities publicly connect the name of Marquis Darrnell Green, 41, to the East Side scene and confirm the fatality that morning. Public listings and memorial pages subsequently marked the date and city of his death, echoing what police logs already recorded about the time and place.
In the days that followed, the threads of the case—an argument over missing property, a witness's account, a video of the fight, and a single shot—hardened into the narrative prosecutors say they will carry into court. For Marquis Darrnell Green, 41, the quarrel in the breezeway ended his life; for the man accused, the same moments now form the spine of a murder charge that will be tested against the affidavit, the images investigators collected, and the testimony of those who were close enough to hear the argument begin.
