UPDATE: 10.30am

A spokeswoman for Gwent Police said emergency vehicles were called to crash at 8.13am.

She said: "Emergency services were called this morning at around 8.13am to a two vehicle collision between a black Skoda Octavia and a blue Renault Clio on the M4 between J26 and 27.

"All lanes are now clear and no serious/life changing injuries are thought to have been received."

------------------

TRAFFIC is building up on the M4 between J26 (Malpas Road) and J27 (High Cross) after two lanes were closed due to a crash. 

Traffic is also building up in Malpas due to the accident and on the SDR as well. 

All vehicles involved in the accident have now been moved on to the hard shoulder. 

More follows.