The southbound carriageway of the M1 has been COMPLETELY CLOSED near Sheffield after a four vehicle accident.
The collision happened a short time ago between junctions 34 and 33 of the motorway.
Initially just lanes 1 and 4 of the carriageway were closed but the Highways Agency have just closed all four of the southbound carriageway and lane 4 of the northbound carriageway.
Emergency services including firefighters and paramedics are currently working at the scene and tailbacks are building.
More to follow.