Read / Add Comments A Hackensack man shot and killed himself behind city police headquarters on State Street early Thursday evening, responders said. Police said they found the 76-year-old security guard with a single gunshot wound to the head in his sedan in the rear parking lot off Central Avenue around 7:30 p.m. The flash could be seen on surveillance video, they said. In the car they found two guns -- a 9mm and a .45-caliber, which was the weapon that was used, responders said. There were no indications of foul play, they said. The Bergen County Prosecutor's Office was notified. The Bergen County Sheriff's Bureau of Criminal Identification was summoned to collect evidence.