At 6:20am this morning (16th Dec 2011) an HGV overturned on the A1, 1 mile North from J44 near to Bramham.
The HGV was travelling on the soutbound carriageway of the A1 when it swerved to avoid some debris in the road.
The HGV overturned, colliding with the central reservation and shedding its load of cardboard across both carriageways.
As a result of the collision, a Jaguar and a Ford Focus were also involved in collisions.
Four men have been taken to hospitals in the local area with only the driver of the Ford Focus believed to be seriously injured at this time.
Enquiries into the incident are ongoing and the A1 is expected to remain shut between Junctions 44 and 45 in both directions for several hours