A gunman in western Pennsylvania shot two police officers -- killing one of them -- in an early morning ambush-style attack, state police said.
The shooting happened in the town of Canonsburg, about 18 miles southwest of Pittsburgh, after the officers responded to a call about a domestic incident at 3:14 a.m. The officers were ambushed upon arrival "as soon as they approached the front of the residence," a Pennsylvania State Police spokesperson said at a press conference this morning.