FOUR days after up to 600 tonnes of landfill material went up in smoke in Newport, firefighters were still at the scene today.

A crew from Maindee were damping down hotspots at Able Skips, Nash Mead, South Wales Fire and Rescue Service said.

Police confirmed they are probing the cause of the fire, which 23 firefighters began fighting from 2.10pm on Sunday.

A spokeswoman for Newport council said its environmental health officers were monitoring air quality at the site, while Natural Resources Wales were continuing to support the fire service to make sure the environment was protected.

It is not known yet when the clear up will start.

The Argus previously reported how crews had been forced to fight the fire from outside due to a large amount of rubble which was causing a health and safety issue.

On Sunday, firefighters requested extra help as flames spread to 85 percent of the building and eyewitnesses saw them tackle the blaze from above with a hydraulic platform.

Police reassured residents the smoke was not toxic, but that doors and windows should be closed as much as possible.

Anyone with information should call police on 101.