Emergency services are currently in attendance at a multi-vehicle collision at M3 Southbound between Junction 10 and Junction 11 for Winchester South Exit.
Witnesses have also reported a Sainsbury’s delivery lorry involved in the collision.
Vehicles are reported to be facing the wrong direction on the exit slip carriageway.
Hampshire police have said; “Officers are currently on scene dealing with a serious collision on the southbound M3.
A road closure has been put in place between junctions 10 and 11, and is likely to be in place for a number of hours.
We would advise you to take an alternative route if possible, and would like to thank you for your patience.”