Around 10:20 p.m., a man forced his way into the Auburn Bowl, 1815 Sprott St., and took a large amount of money in cash and coins, state police at Fort Wayne said in a statement.
Police believe the suspect used a brown-and-orange "Hammer" brand bowling bag to make off with the cash.
Earlier this afternoon, police had asked for the public's help in identifying a man in a surveillance photo. That man is the one who is being questioned, police said.
Police are still asking for anyone with information to call state police at 800-552-0976 or 260-432-8661, or Crime Stoppers at 260-436-7867.