One police officer has been killed, another has been wounded, following a shooting in the US state of Pennsylvania.
A police officer has been killed and another wounded in a shooting in western Pennsylvania.
The officers were responding to a domestic situation in Canonsburg, 20 miles south-west of Pittsburgh, at about 3.15am on Thursday morning.
State police trooper Melinda Bondarenka said the officers were “ambushed upon their arrival” at the scene and immediately shot. They were taken to hospital, where one has since died.
A search is currently under way for the killer, but police have not said whether they have identified a suspect.
Washington County coroner Tim Warco did not immediately identify the dead officer because his relatives are yet to be notified.