Some labor and delivery patients at South Dakota’s largest hospital were evacuated to another unit after a small fire broke out. The fire on a maintenance cart sent smoke into the labor and delivery unit at Sanford USD Medical Center in Sioux Falls late Tuesday night. A Sanford Health spokesperson says the fire occurred in the bio-med area on a lower level and was put out by the sprinkler system in the building. The labor and delivery patients were sent to the critical care unit. There were no injuries.