PATIENTS HAVE BEEN moved out of wards at the Altnagelvin Hospital in Derry, Northern Ireland.
The PSNI said that police and Northern Ireland fire service personnel are currently attending the fire at Altnagelvin Hospital in Derry.
The entrances to the hospital have been closed to all non-emergency personnel and evacuations of several wards have begun, it added.
There are no reports of any injuries at this time.
BBC News reports that there are 11 fire appliances and around 50 firefighters at the scene.