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.
Three people were transported to area hospitals, including one who was listed in critical condition and two who were treated and released. More than 20 firefighters were evaluated, many for heat exhaustion, authorities said.
The Allegheny County Medical Examiner’s Office was expected to provide additional information about the deceased victims.