Suspect at large after fatal police shooting in Pennsylvania
A manhunt is under way after one of two western Pennsylvania police officers shot while responding to a domestic situation has died.
Washington County Coroner Tim Warco would not identify the Canonsburg officer who was killed because relatives are still being notified.
Canonsburg and state police say the incident began at about 3.15am local time. The officers were immediately met with gunfire when they arrived at the scene.
The surviving officer has been flown to a hospital in Pittsburgh.
Police and SWAT teams have been seen near at least two homes in the borough about 20 miles south-west of Pittsburgh. It is not clear whether the suspect was in either of those homes.
Nearby schools were delayed or cancelled because of the heavy police presence.
More to follow...