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4 people dead, 1 missing after explosion destroys 3 structures in western Pennsylvania

PLUM, Pennsylvania: Four people were dead and a fifth was unaccounted for following a house explosion in western Pennsylvania that destroyed three structures and damaged at least a dozen others Saturday morning, authorities said.

Allegheny County officials said three people were taken to hospitals after the blast shortly before 10:30 a.m. in the borough of Plum, about 20 miles (32 kilometers) east of Pittsburgh.