Update 5.04pm: The blocked lane has now reopened after a crash in the M4 Brynglas Tunnels earlier.
Lane two was blocked for around twenty minutes following the two-car crash inside the tunnel.
4.33pm: ONE lane is blocked and traffic is queuing because of a "multi-vehicle" crash on the M4 eastbound inside the Brynglas Tunnels.
The crash happened eastbound between junction 26 for Malpas Road and junction 25A for the Grove Park Roundabout.
There is congestion to junction 27 at Highcross.
The second lane is blocked inside the tunnel.
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