— 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. Advertisement Three people were transported to area hospitals, including one who was listed in critica

Conley added that the medical examiner plans to release the identities of the victims. Addressing reporters at the scene late Saturday, Plum Police Det.... " At this point, we have confirmed four deceased and one person is still unaccounted for," he said. Three additional individuals were transported to area hospitals.... The third remained in critical condition as of Saturday night, officials said. Investigators have yet to disclose the suspected cause of the explosion or other details....