One killed, three injured in explosion at U.S. Army base in Missouri

(Reuters) - One employee was killed and four others were injured in an explosion at a U.S. Army ammunition plant in Independence, Missouri, on Tuesday, a spokeswoman for the Joint Munitions Command said.

A spokeswoman for the Munitions Command, which manages ammunitions installations for all branches of the U.S. military, said the four injured workers were evaluated at the scene and declined further treatment.