Watch: Manhunt in Maryland for suspects in killing of Baltimore County police officer

An intense manhunt involving aircraft and trained dogs is underway Tuesday in a greater Baltimore suburb after a female officer was killed by four suspects believed to be armed and dangerous, as authorities announced a 16-year-old male has been arrested in connection with the slaying. The four-year veteran of the force, who has not yet been named, was responding to a suspicious vehicle call Monday in the community of Perry Hall that Baltimore County Police Cpl. Shawn Vinson said may have been the result of a burglary, when she encountered a suspect and was “critically injured.” -- More...