Antigo police and firefighters were confronted with a situation involving a mysterious burning backpack in an apartment on Fifth Avenue. First, a man went to the Safety Building to report a fire in the 800 block on Fifth. Police say the man seemed drunk. Inside an apartment firefighters were dealing with what first looked like a burnt pile of clothes on the floor. It was actually a backpack containing clothing and medical supplies. The people who lived in the apartment said they left to go to the grocery store, and when they came back, they discovered the burning backpack. The man who reported the fire turned out to be a neighbor. Police are continuing to investigate and charges may be forthcoming.