UPDATE: A worker has been treated and released from a hospital after receiving minor injuries in an explosion at a Pennsylvania Army depot.
The worker had been taken by ambulance early Thursday to a hospital near the Letterkenny Army Depot, about 160 miles (257 kilometers) west of Philadelphia, shortly after the explosion and fire at a paint operation of a vehicle shop. A hospital spokeswoman says the worker did not receive treatment for burns, but did not release further details of the injury.
Officials say three other employees were airlifted to Baltimore area hospitals with burn-related injuries. Their conditions were not immediately known.
Army officials say the cause of the blast is still under investigation. It was contained to a single area of the depot, and there was no suspicion of terrorist activity.
By MARK SCOLFORO, Associated Press
CHAMBERSBURG, Pa. (AP) — A small explosion Thursday in a vehicle shop at an Army depot injured four workers, leaving at least three with burns, officials said.
The blast occurred at Letterkenny Army Depot about 7:15 a.m. Army Depot officials quickly posted on social media that the blast was contained, that operations elsewhere on the base would not be affected and that there was no suspicion of terrorist activity.
Col. Stephen Ledbetter, the depot commander, said three victims were flown to Baltimore area hospitals and the fourth left in an ambulance.
A fire company said three had burns. Their conditions were not immediately available.
Ledbetter said the explosion occurred in the painting area of a vehicle shop.
Both the Army and the Occupational Safety and Health Administration will investigate, he said.
The depot, located 160 miles (257 kilometers) west of Philadelphia, or about 55 miles (88 kilometers) southwest of Harrisburg, employs about 3,600 people. The depot’s website says work there focuses on air defense tactical missile ground support equipment, mobile electric power generation equipment, Patriot missile recertification and route guidance vehicles.