Georgia State Patrol, the Whitfield County Sheriff's Office and other law enforcement agencies worked a single vehicle accident Saturday night on I-75 south. Whitfield County dispatchers tell Channel 3 the motorcycle accident happened just after 8:00 p.m. near mile marker 323. Life Force was called in, which closed both sides of the Interstate so the air ambulance could land. The condition of the motorcyclist is unknown but GSP dispatch says the motorcyclist suffered severe injuries. We'll continue to update this story on air and online as more information becomes available.