MINNEAPOLIS (WCCO) – Firefighters in the west metro worked all night to keep a wetland fire from damaging any homes or businesses.

Around 8:30 p.m. Sunday, a fire occurred in a large wetland area between Highway 12 and Independence City Hall.

READ MORE: Tips For Buying A Home In A Historically Tough Market

Police said the fire started in the middle of the swamp, which is completely covered in Cattails and water. It was measured at approximately 100 feet by 100 feet when crews arrived.

READ MORE: What's The Risk Of Getting COVID On A Plane?

The fire burned over 50 acres of the 160 acre swamp, but firefighters were able to keep the flames from damaging any buildings.

Highway 12 was closed for four hours between County Road 83 and County Road 90.

MORE NEWS: DNR: Early 'Fish Kill' On Minnesota Lakes Isn't Cause For Alarm

The cause is currently under investigation.