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Multi-vehicle crash shuts M4 at Cardiff

Police are appealing for witnesses. Credit: PA

South Wales Police is investigating a crash involving a motorcyclist on the westbound carriageway of the M4 Motorway at around 7.15am today.

The male rider of the motorcycle has been taken to the University Hospital of Wales where is condition is described as critical.

The westbound carriageway of the motorway has been closed between junctions 29 and 33 to allow for police investigations to take place.