(ST. CLAIR COUNTY) -- The St. Clair County Sheriff's Office is seeking tips from the public following an armed robbery at the Sunoco Station at Division and Palms around 5:20 a.m. Sunday morning in Casco Township. According to the witness, a shorter white man, wearing a black trench coat, blue jeans, a blue ski mask, a hospital mask and a knee brace, came into the store armed with a rifle. The man demanded money. Once he received the money, he left in a small passenger car with a sun roof. No one was injured during the hold up. Anyone with information is asked to contact St. Clair County authorities.