By Devon M. Sayers, Michelle Watson and Eric Levenson, CNN

The planned $90 million, 85-acre Atlanta Public Safety Training Center is to be built in a forested area of Dekalb County that used to be a prison farm. The proposed facility will include a shooting range, mock city and burn building, CNN has previously reported.

Activists determined to stop the project – dubbed “Cop City” – have camped out in the forest’s trees and have said they do not plan to leave.

On Tuesday, several police agencies entered the site as part of a joint operation to remove barricades that were blocking some of the entrances to the center, the Georgia Bureau of Investigation said.

“Yesterday, several people threw rocks at police cars and attacked EMT’s outside the neighboring fire stations with rocks and bottles,” the bureau said Wednesday. “Task force members used various tactics to arrest individuals who were occupying makeshift treehouses.”

The bureau said police cleared the area of makeshift treehouses and later found explosive devices, gasoline and road flares.

READ MORE