On Friday (27) at 3:08am, two crews from Cambridge were called to a building fire on Impetts Lane, Fulbourn.
Crews arrived to find a fire in a youth centre.
Wearing breathing apparatus, firefighters used three jets and two hose reels to extinguish the fire, followed by a positive pressure ventilation fan to clear the smoke.
All crews returned to their stations by 11am.
The cause of the fire was accidental.