ROUGH CUT (NO REPORTER NARRATION)<br/> <br />STORY: A gunman who had posted anti-police statements on social media ambushed two New York police officers as they sat in their squad car on Saturday and then killed himself, police said.<br/> <br />The officers were killed without warning in their marked police car as they were on duty in the Bedford-Stuyvesant section of Brooklyn, Police Commissioner William Bratton told a news conference flanked by Mayor Bill de Blasio.<br/> <br />"They were quite simply assassinated," he said.<br/> <br />Bratton said the gunman, Ismaaiyl Brinsley, 28, took a shooter's stance on the passenger side of the squad car and opened fire with a silver semi-automatic handgun.<br/> <br />He then fled into a nearby subway station and died there from a self-inflicted gunshot wound to the head, Bratton said.<br/> <br />Brinsley had shot and seriously wounded his girlfriend in Baltimore County, Maryland, early on Saturday before traveling to Brooklyn, where he had connections, the police chief sai
