Firefighters were called out to HMP La Moye on Saturday night to tackle a blaze in the prison kitchen.
Prison staff called 999 shortly after 8pm, and all the emergency services were dispatched as a precaution.
The fire was put out a short time later.
No one was injured during the incident, and the Prison Service says there is 'no suggestion' of any suspicious activity or the fire being started deliberately.
Contingency plans have been brought in to make sure prisoners are being fed as normal.
Duke of Edinburgh Award celebrates 70 years with Government House event
Islanders with the rare Gold Duke of Edinburgh Award have been invited to a celebration at Government House.
Highs of 39°C forecast on 5th day of Jersey's June heatwave
Some Jersey schools have decided to close as the island endures a fifth straight day of extremely hot weather.
Scooters stolen from airport
Police are investigating after two 125cc scooters were stolen from Jersey Airport.
Call to avoid A&E if possible as heatwave continues
Islanders are being asked to avoid A&E if it's not necessary, with the hot weather placing extra strain on the hospital.
Former Chamber President takes temporary charge
A former Jersey Chamber of Commerce president has returned to the role temporarily after Lee Madden stepped down following a backlash to a donation he made to a political movement.
Sensory bags sent to Jersey football community
Football clubs across Jersey are being given sensory bags to support people with autism.
The first ever Royal Visit to The Ecréhous
Her Royal Highness Sophie, Duchess of Edinburgh, made history today (23 June) by being the first member of the Royal Family to visit The Écréhous.
Second-hottest Jersey day on record
Jersey has had its second-hottest day since records began in 1894!
