Gwent Police is currently responding to a report of a lorry that has driven down the embankment and onto land alongside the M4 Westbound at the end of the Prince of Wales Bridge.
Officers are currently on the scene and the M4 westbound road is closed.
We are advising motorists to avoid the area due to heavy congestion.
Anyone with any information or anyone who may have witnessed the incident or has dash cam footage is urged to contact Gwent Police on 101 or Direct Message us on Facebook or Twitter, quoting log 129 04/09/19.
We will update you as soon as we have more information.
Oherwydd natur frys y cyhoeddiad hwn, nid oes cyfieithiad uniongyrchol yn Gymraeg ar gael ar hyn o bryd. Rydym yn ymddiheuro am unrhyw anghyfleustra. Diolch.
Due to the urgent nature of this publication, there is no immediate translation into the medium of Welsh available at this time. We apologise for any inconvenience. Thank you.