Police arrested a 71-year-old man after he allegedly assaulted a 40-year-old man in Waianae.
Police said the suspect and victim got into an argument at about 8:40 p.m. Sunday. The argument intensified and the assailant allegedly assaulted the victim with an unspecified dangerous instrument.
The suspect and the victim are acquaintances.
Police responded and arrested the suspect on suspicion of second-degree assault.