An investigation is underway into a fire which broke out at Fiona Stanley Hospital’s intensive care unit, which saw surgeries cancelled and staff evacuated.

Nine firefighting trucks attended after the fire was reported at 10.05am on Thursday. According to the Department of Fire and Emergency Services, hospital staff said the fire started in a self-contained room within the ICU.

Staff in the area were evacuated and a code yellow emergency alert was issued, advising staff of a code red incident in the ICU on level one of the hospital in Murdoch.

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DFES crews arrived within four minutes, and by 10.24am the fire had been contained to the bay. By 10.30am the fire was extinguished but the room was smoke logged, DFES said.

It is understood some areas were damaged by water from internal fire service systems.

DFES fire investigation officers are now at the scene investigating the cause. Credit: The West Australian/The West Australian

DFES fire investigation officers are now at the scene investigating the cause.

The South Metropolitan Health Service confirmed the incident took place on Thursday morning.

It is not known if anyone was injured in the fire, or what caused it.

Emergency services at Fiona Stanley Hospital after a fire started in the ICU. Credit: The West Australian/The West Australian

It is understood elective surgeries at the hospital have been cancelled.

The SMHS is expected to release more information soon.

More to come.