Around 40 firefighters were called to tackle a blaze at a landfill site in East Lothian.
Crews received a call to attend the site in Dunbar at 2.36am on Tuesday.
The fire was still burning at around 7am, with two lines of hose being used against the flames, a Scottish Fire and Rescue Service (SFRS) spokesman said.
He also said 300 tonnes of waste was alight at the Viridor plant.
A spokesman for Viridor said: “A fire was reported at Viridor’s Dunbar Landfill site early this morning.
“The Scottish Fire and Rescue Service currently has six fire crews on site dealing with the fire in a building where waste arriving on site is stored before it is landfilled.
“No one has been injured and there is no risk to public health. The Scottish Environment Protection Agency has been notified.
“The site remains closed to allow the fire service to complete its work.”
Viridor said that the separate energy recovery facility at Dunbar is unaffected.