Live updates as accident closes main A449 Monmouthshire road close to M4

People have been urged not to get out of the cars as they wait on a for a major road to reopen after a serious accident. The A449 was closed in both directions in Monmouthshire after a crash on Saturday afternoon.

At 4pm, the southbound carriageway was re-opened but northbound remains closed. Traffic was stationary for several hours at the scene.

A spokesman for Gwent Police said: "For safety reasons, please can all those affected stay inside their vehicles whilst officers work to resolve the incident. Emergency vehicle will commuting to the incident using both northbound and southbound carriageways."

The road is closed from the M4 junction 24 at Coldra to Usk. Traffic Wales says: "Road closed at this time Please use an alternate route. Updates to follow."