The Warren County Sheriff's Office is searching for a missing man who is insulin-dependent and does not have his medication with him.Deputies are looking for Marcus Castillo who was last seen on Monday at around 9:30 p.m. after taking the trash out at his home in Franklin Township.Castillo is a Hispanic man who is 5 feet, 5 inches tall and weighs around 200 pounds. He has black hair and brown eyes.Castillo was last seen wearing a dark blue shirt, light gray pants and black Nike shoes.Anyone with information is asked to call the Warren County Sheriff's Office at 513-695-1598.