Duane Keith “Keffe D” Davis, a former Southern California street gang leader, pleaded not guilty to murder in the 1996 killing of Tupac Shakur in Las Vegas. The charge was prompted by Davis' own descriptions of orchestrating the drive-by shooting, which was allegedly in retaliation for a brawl involving Shakur and Davis' nephew. Davis is currently being held without bail and is due back in court on August 5th.