Eight people had to be evacuated from their homes in St Ouen overnight following an explosion and fire in an oil heating system.
Fire crews were called out just before 1.30am.
Two engines were initially dispatched.
They found the fire had spread within the roof of the nine properties. A third appliance was sent to the scene.
14 firefighters attended and used breathing apparatus and high pressure hose reels to put out the blaze, understood to be in sheltered housing.
The residents were evacuated because of the large amount of smoke. Two people were taken to hospital for smoke inhalation.
How to have 'safe and enjoyable' Jersey beaches for summer
Appeal after woman grabbed by throat in nightclub
Essential work to begin on Springfield Stadium
Man who dug up cocaine in woods is jailed
Jersey and Guernsey included in UK-Gulf trade deal
Man jailed for series of violent assaults
Woman jailed for trying to smuggle cocaine into Jersey
Flytipping investigation launched after mounds of earth dumped in Trinity
