Extensive damage has been caused by a fire at a big recycling plant outside Slane in Co Meath.
Three units of the fire brigade are still at the headquarters of Panda Waste Services at Rathdrinagh Beauparc Business Park.
There have been no injuries and the fire is confined to just one building.
Gardaí are appealing to motorists in the area to drive with caution because of the amount of smoke emanating from the fire.
A fire brigade spokesman said it could take up to 48 hours before the fire is fully dealt with.
The fire is based in an EPA licensed warehouse containing 700 tonnes of recycled waste.
Emergency services have been at the scene since about 11.30pm last night.
Panda Waste Service has said that there is no toxic material located at the facility.
The company said the fire will have no impact on services or employment.
100 people are employed at the plant, which has the capacity to recycle 180,000 tonnes of municipal and household waste.
It also recycles 120,000 tonnes of commercial hardboard and paper from 1,200 customers around the country for export to China as recycled processed packaging material.