CUSTER STATE PARK, S.D. — More than hundred firefighters were able to completely contain a fire in Custer State Park that burned at least 60 acres during the last 28 hours, according to an update from Gov. Kristi Noem's Communications Director Ian Fury.

Fury emailed the update at 3:35 p.m. Thursday, June 25.

Mine Draw Fire was discovered Wednesday, June 24 at 11:19 a.m. in an area about seven miles south of Mount Rushmore National Monument.

The cause of the fire is still under investigation, Fury noted in a previous press release on Thursday.

At 11:15 a.m. on Thursday, June 25, 117 firefighters had the fire 25% contained.

Two helicopters and a plane were used to suppress the fire. Additional firefighters and air resources were on hand if needed, Fury said.

The latest update did not address whether northbound State Highway 87 from junction U.S. Highway 16A and Needles Highway to Playhouse Road was reopened to traffic.

According to the South Dakota Division of Wildland Fire, the there was active fire behavior with spotting, short crown runs and torching.

That means the fire was burning principally as a surface fire that intermittently ignites the crowns of trees or shrubs as it advances.