Five appliances from the Northern Ireland Fire and Rescue Service were called to deal with an "accidental" blaze in Derry city centre on Thursday morning.
It's understood that NIFRS were called to deal with an incident at a local pub in the Waterloo Street area of the city shortly after 6am on December 29.
Video footage circulating online shows the area sealed off to pedestrians as the fire services deal with the fire.
Read more: Shock and anger after fire attack on popular NI community facility
A spokesperson for the fire service said that five appliances from across the city were alerted to deal with the incident.
In a statement, the NIFRS said: "Three Fire Appliances from Northland Fire Station and 2 Fire Appliances each from Crescent Link Fire Station and Strabane Fire Station attended the scene.
"Firefighters were called to reports of the ground floor of a non-residential building on fire this morning. Firefighters wearing breathing used two hose reels and one jet to extinguish the fire.
"The incident was dealt with by 9.58am and the cause of the fire is believed to be accidental."
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