A portion of Custer's downtown district was closed Friday evening after a report that something resembling an explosive device was taped to a tree in Way Park.
Although the device was not an explosive, emergency evacuations were made and the area around the park was evacuated, Custer County Sheriff Rick Wheeler said.
Way Park is located on Mount Rushmore Road, a busy tourist route through the city. Deputies arrived at the scene at approximately 9:30 p.m., Wheeler said.
The state Division of Criminal Investigation and Ellsworth Air Force Base were contacted.
Citing security concerns, Wheeler refused to release any specific details of the incident.