UPDATE: Norwich City fans heading for Swansea match warned about M4 crash delays
Norwich City fans making their way to the Canaries' clash with Swansea have been warned to expect delays because of a crash on the M4.
A crash involving two vehicles at about 11.30am near the exit slip road at Newport had closed the main westbound carriageway.
Traffic was being routed around the the junction and back onto the M4 again at junction 24. The lanes were all re-opened by 12.40pm, but traffic remains heavy.
Twitter users took to the social networking site to warn fellow Norwich City fans to expect extra time for their journey.
The Premier League match with Swansea is due to kick off at 3pm.