A 53-year-old male university employee at MSU's Simon Power Plant reported being assaulted by a 47-year-old male co-worker Saturday night, MSU police Lt. Kelly Beck said.The victim said he had no idea why he was punched in the face and the man left before police arrived, Beck said. The victim was taken to Lansing's Sparrow Hospital, but does not wish to press charges.• A 24-year-old university employee reported receiving an obscene phone call at her office in Giltner Hall on Saturday morning, Beck said.The victim said the caller had a masculine voice, Beck said. Police have no suspects.