Pennsylvania police reportedly warned 3 'radical' associates of terror suspect on the loose FBI Investigating new tip in Philadelphia cop ambush Philadelphia police have been told that three "radical" associates of a self-proclaimed ISIS-inspired gunman who attacked a cop Thursday were still at large and that "the threat to police is not over," according to a published report. A law enforcement source told Fox News that city police and the FBI were investigating the tip, which came from a woman who stopped an officer on the street Saturday night. The Philadelpha Inquirer reported Sunday that the woman told police that...