A fourth man has been arrested in connection to a killing in a parking lot on Tucson's east side, police say.
Luis Manuel Salas, 34, was arrested Wednesday and booked into the Pima County jail on suspicion of first-degree murder and kidnapping in connection to the killing in June of Christopher Hart, 37.
Other arrested in the case are: Miguel Francisco Rodriguez, 39; Aaron Fernando Montiel, 47; and Miguel Cipriano Lara-Cabazos, 27.
On June 22, off-duty officers went to a shopping center in the 6900 block of East 22nd Street in response to a reported assault.
Hart was found injured and he died the next day at the hospital.
Police say there was an argument between Hart and a group of men. A short time later, additional men arrived and assaulted Hart and his friend.
The attackers fled prior to police arrival.