Fire crews dealt with a blaze at a recycling facility in a north Belfast industrial estate on Sunday.
The fire in the Advantage Way area in the Ballygomartin Industrial Park was reported shortly after 4am.
Four appliances and around 30 firefighters attended the blaze.
It is understood the Northern Ireland Fire and Rescue Service (NIFRS) are treating the fire as accidental.
The public were urged to keep their windows closed and avoid the area.
A NIFRS spokesperson appealed for "those impacted by smoke in the area to keep windows and doors closed and avoid the area, we will be in attendance for some time and will provide an update later today".
NIFRS are currently in attendance at Ballygomartin Industrial Park, we are dealing with an incident at a recycling and storage facility.
— Northern Ireland Fire & Rescue Service (@NIFRSOFFICIAL) August 13, 2023
NIFRS would ask that those impacted by smoke in the area to keep windows and doors closed and avoid the area, we will provide an update later.
A PSNI spokesperson also said: "Police along with other emergency services are currently at the scene of a fire in an industrial estate in the Advantage Way area of Ballygomartin, north Belfast.
"Northern Ireland Fire and Rescue Service have advised residents to keep their window closed while they deal with the fire.
"The public are also advised to avoid the area at this time."
