ROCKBRIDGE COUNTY, Va. (WFXR) — The Virginia State Police says they are investigating a tractor-trailer crash that left one dead in Rockbridge County on Interstate 81 south.

Troopers say the crash occurred shortly after 11 p.m. on Sunday, Dec. 4th at mile marker 202 near Raphine. The crash closed all southbound lanes. Troopers say southbound lanes are now open.

The cause of the crash is unknown at this time. The victim has not yet been identified.

This is a developing story. WFXR news will update this story as additional details become available.