Firefighters were called to a flat fire after paper was left on an electric hob.
Crews were called to Saunders Avenue, Prescot, at about 11.20am last Thursday.
It is suspected that the fire was an accident.
Smoke alarms activated and there were no reports of any injuries.
Firefighters remained at the scene for about 10 minutes.
A brigade spokesman said no-one was injured during the incident.