Falmer Road has been shut after two vans collided this afternoon.
The crash happened at about 3.15pm on the stretch between the American Express COmmunity Stadium and Bexhill Road.
One person is reported trapped in one of the vans. The air ambulance service is "aware" of the incident.
Paramedics are on the scene and firefighters are cutting free the trapped man.
Traffic is being diverted as a result of the road closure.
Our photographer Terry Applin reports queues are backing up as far as Lewes Road and along the A27 near Falmer.