Firefighters are investigating what caused a barn to catch fire near Interstate 94 and Seven Mile Road. It started just before 9:30 p.m. on Tuesday. Raymond Fire and Rescue units arrived at the scene to find a small shed at the rear of the property fully involved in fire and extending to a pole barn. The pole barn was heavily involved in fire and threatened the home that was approximately 20 feet away. News Chopper 12 captured video of the burned-out building Wednesday morning. Several fire departments responded to the call including Milwaukee, Waukesha and Racine County fire. The cause of the fire is under investigation by the Racine County Fire Investigation Task Force and the Racine County Sheriff's Department.