UPDATE: 4:40pm

The road is now re-open.

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A TWO-vehicle collision on the A465 Head of the Valleys road is resulting in congestion.

The road has been closed and a diversion put in place following the incident which occurred on the eastbound carriageway near Brynmawr.

South Wales Argus:

READ MORE:

Gwent Police are advising motorists to seek alternative routes if travelling in the area.

The fire service and ambulance crews are also at the scene.