THE closure of the M4 eastbound through Brynglas Tunnels has caused traffic gridlock in and around Newport this afternoon.

Delays of up to 30 minutes have been reported on the motorway between Junction 26 (Malpas) and Junction 29 (Tredegar Park).

Traffic is also building at Junction 24 (Coldra) and along the B4237

Severe delays have also spilled into the city, with the A48 Southern Distributor Road backed up with traffic as far back as Tredegar Roundabout.

The eastbound tunnel will be reopened to traffic from 6am on Monday.