A Kalihi shopper foiled an attempt by a 21-year-old man who allegedly tried to rob a store near Kuhio Park Terrace public housing Tuesday afternoon.

Police said suspect entered the Kalihi store at 4:45 p.m. armed with a handgun and demanded money from the cashier. A struggle followed when the cashier refused to give into to the suspect’s demands. When a customer stepped in, the suspect fled and was caught near the public housing.

He was arrested on suspicion of first-degree robbery.

The cashier suffered minor injuries, but refused medical treatment.