Editor's note: A previous version of this story incorrectly stated Leo Berroteran was the man killed in the explosion at the Lake City Army Ammunition Plant.
One person has died and four were injured Tuesday after an explosion at an Army ammunition plant in Missouri, officials said.
The Army did not say how long Bass worked at the plant or in what capacity.
The four injured employees were evaluated on scene and refused further treating.
The scene was secured and rendered safe by U.S. Alcohol Tobacco, Firearms and Explosives agents, and an investigation could determine what caused the explosion, Barati said. It also operates the North Atlantic Treaty Organisation test center.
"We confirm there was an explosion today at the Lake City Army Ammunition Plant that resulted in a fatality of one of our team members", it states.
Federal investigators fined the plant for workplace safety issues in 2008, 2011 and 2012. A mixing cell is a building area where the components of munitions are mixed together.
The 77-year-old plant sits on a property with more than 400 other buildings and nine warehouses. "Our hearts truly go out to the family", Jim Nichols, Orbital ATK Small Caliber Systems Vice President Jim Nichols said.
The private contractor operating the plant in 2011 was initially charged $28,000 for safety issues, and paid $5,600 to the Occupational Safety and Health Administration, which cited "serious" problems with the handling of potentially risky chemicals.
Independence, Missouri, is about 10 miles east of Kansas City. The government staff has a payroll of $2.9 million.
In March 2011, six people were injured at the same ammunition plant.