The coroner says one of two western Pennsylvania police officers shot while responding to a domestic situation has died, and police are searching for a suspect.
Washington County Coroner Tim Warco wouldn't identify the Canonsburg officer who was slain because relatives are still being notified.
Canonsburg and state police say the incident began about 3:15 a.m.
Trooper Melinda Bondarenka tells reporters the officers were immediately met with gunfire when they arrived at the scene.
The surviving officer has been flown to a hospital in Pittsburgh. His condition wasn't immediately available.
Police and SWAT teams have been seen near at least two homes in the borough about 20 miles southwest of Pittsburgh. It's not clear whether the suspect was in either of those homes.
Nearby schools were delayed or canceled because of the heavy police presence.
This morning's news conference update:
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