More than 30 firefighters are tackling a blaze in a science building at the University of St Andrews in Fife.
Six fire appliances were sent to the scene after the alarm was raised just before 17:00 on Sunday.
The building is in the North Haugh area of the town.
Images posted on social media showed flames and smoke rising into the air from the four-storey building. The fire service said there were no reports of any casualties.
They remain at the scene along with officers from Police Scotland.