An investigation has been launched after a fire was started at a Stevenage school.

Firefighters were called to a building in Marriotts School on Brittian Way at 12.25pm.

The fire happened on the second floor of a main block of the school and was extinguished by the school’s sprinkler system.

Three engines – two from Stevenage and one from Hitchin – attended the blaze, which was out by 1.34pm.

After it was put out a Fire Investigation Team went to the school to establish how it started.

At this stage it is unclear but a spokesman for the fire service said there is reason to believe it may have been started deliberately.