More than 30 firefighters are tackling a major blaze in a science building at the University of St Andrews.
Eight fire appliances were sent to the scene after reports of a fire involving suspected hazardous materials just before 5pm on Sunday.
The biomedical sciences building is in the North Haugh area of the Fife town.
The university said there were no reports of any injuries or anyone in the building.
Images posted on social media showed flames in the windows of the building.
Police are also at the scene.