Federal investigators have determined that the explosion that killed a worker Tuesday at the Lake City Army Ammunition Plant was a “noncriminal, accidental incident.”
The exact cause of the explosion at the plant in Independence remains under investigation, according to a news release from the Bureau of Alcohol, Tobacco, Firearms and Explosives.
The explosion in a primer manufacturing building killed 55-year-old Lawrence Bass of Blue Springs and injured four others.
The ATF said Friday that the on-site investigation has been completed.
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A final determination of the cause will be released to the United States Army, Joint Munitions Command when ATF has completed all phases of the investigation, according to the statement.