A 25-year-old man was in custody Sunday after he struck a man with a bat in Waikiki, police said.

The suspect was arguing with a 33-year-old man when he hit the older man in the chest with an aluminum baseball bat, causing pain and swelling, police said.

The incident occurred at about 2:30 a.m. Sunday and the suspect was arrested shortly afterwards on Kaiulani Avenue for investigation of second-degree assault and contempt warrants.