The remote high desert of eastern Oregon became the latest flashpoint for anti-government sentiment as armed protesters occupied a national wildlife refuge to object to a prison sentence for local ranchers for burning federal land.
Ammon Bundy - the son of Nevada rancher Cliven Bundy, who was involved in a 2014 standoff with the government over grazing rights - is among the people at the headquarters of the Malheur National Wildlife Refuge. It was unclear exactly how many people were taking part in the protests.
Ammon Bundy posted a video on his Facebook page asking for militia members to come help him. He said "this is not a time to stand down. It's a time to stand up and come to Harney County," where Burns is located.
Bundy and other militia members came to Burns last month, a small town about 280 miles southeast of Portland, Oregon. They were upset over the looming prison sentences for local ranchers Dwight and Steven Hammond.
They went to the wildlife refuge Saturday evening following a peaceful rally in Burns to support the ranchers.
On Sunday, militia members decked out in camouflage and warm winter gear and holding guns and walkie talkies guarded the entrance. They allowed some news reporters through for interviews with members of the Bundy family. Pickup trucks blocked the entrance and were pulled out of the way to let select cars through.