Multiple injuries after explosion at Army depot in Pennsylvania

Multiple people have been injured in an explosion at a US Army depot in Pennsylvania.

The blast took place at Letterkenny Army Depot around 7:15 a.m. Thursday.

Three people were airlifted to medical safety after the blast, the Franklin County Office of Emergency Management told Fox News. It added that there was no threat to the public.

Two employees ran out of a building on the site screaming and on fire, with one of them having chemical burns, the ABC 27 news channel reported, citing employees on the scene.

More follows.

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