ROCHESTER, Ind. (AP) — A reward of up to $10,000 is available for information that leads to convictions in a north-central Indiana gun shop robbery.

The federal Bureau of Alcohol, Tobacco, Firearms and Explosives and the National Shooting Sports Foundation are offering the reward money. Authorities say an unidentified suspect robbed Sand Burr Gun Shop in Rochester was of 50 firearms on Nov. 20 between 12:30 a.m. and 3:30 a.m. Federal and Fulton County officials are investigating.

ATF officials say violent criminals often use stolen firearms to commit additional crimes. The NSSF is the trade association for the firearms industry. It is matching a $5,000 ATF reward in the case.

Last week, authorities said some of the stolen firearms may have been in Michiana.