STEWARTVILLE, Minn. (AP) - Law enforcement officers have surrounded an apartment building in Stewartville after they received a report of a man with a gun.

Authorities say a man showed up at an apartment about 9 a.m. Thursday to demand money that he was owed. The man is known to carry a gun, but officers say they haven't confirmed that he has one.

Stewartville Intermediate School has been locked down as a precaution. Some area businesses also locked their doors.