The Nova Scotia Health Authority says a small fire overnight in the laundry room of the Northside General Hospital in North Sydney caused only minor damage.
In a statement, the authority said the fire marshall has determined the fire started accidentally in a hamper of clean laundry and was "linked to the spontaneous combustion of linen."
Fire damage was limited to a small dryer room, although the main laundry area sustained smoke and water damage, and smoke travelled to some other areas of the hospital.
The fire triggered the alarm and sprinkler system around 4:30 a.m.
The authority said a hospital security guard was checked for smoke inhalation but needed no further treatment, and there were no injuries.
The hospital has temporarily moved outpatient blood collection, located next to the laundry, to a nearby room, but the emergency department remains open.