A small fire caused the evacuation Saturday night of the 10-room intensive care unit at SSM Health St. Joseph Hospital in Lake Saint Louis.

A hospital spokeswoman said patients were moved to other rooms in the hospital, and no one was harmed. Crews were working to clean the area and return patients to their original rooms by Sunday morning, she said.

The fire broke out in a patient's room around 9:15 p.m. and was quickly put out by a fire extinguisher, the spokeswoman said. No structures were damaged, and clean-up mostly involves the contents of the fire extinguisher.

The cause is still under investigation.

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