YORK, Pa. (AP) — A police officer killed while responding to a Pennsylvania hospital siege was struck by a shotgun blast fired by another officer that also hit the attacker as he held a hospital worker hostage with a gun to her head, a prosecutor disclosed Wednesday.

The attacker and West York Patrolman Andrew W. Duarte were killed in the at UPMC Memorial Hospital in York on Feb. 22, while several other officers and hospital employees were injured.

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