Firefighters were called to a private health club in Northamptonshire after an electrical fault.
Two crews were called to the Balance Health Club in Thurston Drive at about 7.53pm last night.
Staff had discovered a fire in an electric cupboard in the club’s plant room, which spread to a quantity of paper and a box of gym equipment.
Firefighters used breathing apparatus, torches and a hose reel to extinguish the flames.
An brief investigation afterwards suggested the cause was an electrical fault in the circuit breaker.