An Iowa man has been sentenced in a Nebraska federal courtroom to 18 months in prison for having stolen explosives.

U.S. Attorney for Nebraska Deb Gilg says 43-year-old Christopher Bousman, of Council Bluffs, Iowa, was sentenced Monday.

Authorities say that in August 2011, one or more people broke into storage units at the Buckley Powder Company in rural southeast Nebraska and stole 100 pounds of blasting agent, 3,000 feet of detonating cord and two cases of boosters.

An anonymous tip led investigators to Travis McQueen, of Omaha, and officials determined Bousman had assisted McQueen in disposing of the materials by throwing them into the Missouri and Platte rivers.

McQueen was sentenced in January to more than five years in federal prison for possession of stolen explosives.