An altercation between roommates Friday, ended in the arrest of one of the men. Police say the two men were in their Kapahulu apartment when a 45-year-old man allegedly assaulted his 52-year-old roommate with a dangerous instrument at about 10:30 a.m. Police were called and the suspect was arrested on suspicion of second-degree assault at about 11 a.m. Charges are pending.