State police Trooper Melinda Bondarenka told reporters the incident began at 3:14 a.M. When the Canonsburg officers responded to a report of a domestic dispute.
The officers were "ambushed upon their arrival" and immediately shot, Bondarenka said. The dead police officer was identified as Officer Scott Leslie Bashioum.
The surviving officer was flown to a hospital in Pittsburgh, county Coroner Tim Warco said. His name and condition weren't immediately released.
Police and SWAT teams were seen near at least two homes in the borough about 20 miles southwest of Pittsburgh.
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