Northern Ireland Fire and Rescue Service crews have been tackling a large blaze overnight at a derelict building on the grounds of the Gransha Hospital in Derry.
Police are advising residents to keep doors and windows closed while the fire in tackled.
NIFR Service Group Commander Alastair McConville said fire crews were mobilised around 7.30pm on Sunday evening.
A total of 35 firefighters tackled the blaze overnight using four fire appliances, one aerial appliance, one water tank and a command support unit.
The fire crews responding came from Derry, Limavady and Kilrea.
There is currently an ongoing fire at the old Oakgrove College building. NIFRS responded at approximately 19:30 today (08/05/2022) and they have 7 normal appliances, an aerial ladder appliance, a command unit and 2 officer cars on the scene. Asbestos has been confirmed. #Derry pic.twitter.com/lhsCYLRbah
— Aodhán Roberts (@DerryFootage) May 8, 2022