A Guernsey teenager has been taken to hospital following a party in a former World War II bunker on Friday night.
The 16-year-old boy was suffering from breathing difficulties after a dry powder extinguisher was set off in the building.
The police, fire brigade and an ambulance crew all attended the incident in St Saviours.
Several people were treated for inhalation of the extinguisher's fumes at the scene.
There were no reports of serious injuries.