Hernandez is believed to have been inside a silver SUV from which the shots that killed two men in another vehicle were fired.
He became a suspect in the double homicide during the investigation of the June 17 murder of semi-pro football player Odin Lloyd near Hernandez's home. Hernandez is awaiting trial for the first-degree murder of Lloyd.
Daniel Abreu and Safiro Furtado were shot and killed when someone in the silver SUV fired five bullets into their car, killing the two men in the front seats and injuring a third. The warrant puts Hernandez in that SUV, but does not indicate whether he was the one that fired the shots.
Hernandez and Alexander Bradley were seen in surveillance footage at Boston's Cure Lounge on the night of the double-murder, and Bradley later filed a civil lawsuit accusing Hernandez of shooting him in the eye.
Neither a connection between Hernandez and the two men nor a motive for the killings has been listed. While the footage shows Hernandez and Bradley leaving the club shortly before Abreu and Furtado, it is unknown whether the four had an altercation inside Cure Lounge beforehand.
Boston police have not filed charges in the case, but the warrant does suggest Hernandez is at the center of the investigation. The SUV used in the killing was found at the house of Hernandez's uncle, and the gun believed to be used in the killing was found in the trunk of a woman that said "football players" discarded it there.
[CBS 3 Springfield]