Updated: Crash blocks southbound A12 in Essex near Witham
The A12 is blocked southbound between Hatfield Peverel and the Boreham Interchange following a three vehicle crash.
One lane is closed while emergency services deal with the incident on the London-bound carriageway.
Fire crews from Witham and Chelmsford used specialist cutting equipment to free one casualty trapped, while a second person was freed befrore firefighters arrived on scene.
Both were left in the care of paramedics.
The incident involves a black Ford Ka, a blue Ford Ka and a greay Volkswagen Passat.
No-one is thought to be seriously injured at this stage.
Congestion is stretching back to Marks Tey.