Federal land managers confirmed they released all 400 head of cattle rounded up on public land in southern Nevada from a rancher who has refused to recognize their authority.
The Bureau of Land Management took the action Saturday afternoon after hundreds of states' rights protesters, including militia and tea party members, showed up at corrals outside Mesquite to demand the animals' return to rancher Cliven Bundy.
The bureau issued a brief statement saying the cattle were released "due to escalating tensions."
Some protesters were armed with handguns and rifles, but there were no reports of shots fired or injuries.
The release also came only hours after the bureau announced an abrupt halt to the weeklong roundup because of safety concerns for its employees and the public.