(AP) — Federal authorities are offering new reward money for information leading to an additional arrest in the 2011 theft of explosives in southeast Nebraska.

The Bureau of Alcohol, Tobacco, Firearms and Explosives says the $5,000 is not being offered in conjunction with previous reward money that led to the arrest and conviction of two men involved in the removal of the explosives from storage units at the Buckley Powder Company in rural Cass County.

Investigators believe one or more people were involved in the theft, which included 100 pounds of blasting agent.

Authorities say Christopher Bousman helped Travis McQueen get rid of the stolen materials by throwing them into the Missouri and Platte rivers. McQueen was sentenced to 63 months in prison and Bousman was sentenced to 18 months in prison.