A 20-year-old male MSU student was arrested for domestic assault and battery after pushing and threatening his Case Hall roommate at about 6:15 p.m. Wednesday, MSU police Detective Tony Willis said.The man was on the phone with a friend discussing problems he was having with his roommate, also a 20-year-old male student. The roommate was in the room, overheard the conversation and confronted the other man when he got off the phone, Willis said.Willis said the man who had been on the phone became angry and pushed and shoved his roommate and made several threats about beating him up.MSU police officers arrested the man for making the threats, and he was taken to Ingham County Jail to await arraignment.SARA LUNEBURG