BURNS, Ore. - A group of angry anti-government protesters have occupied a building at a national wildlife refuge in Oregon in what they say is an act of solidarity for a pair of ranchers facing jail time for burning government land.

However, the Hammond family, the Oregon ranchers at the center of the dispute, say they don't want them there, reports CBS affiliate KOIN in Portland, Ore.

Ammon Bundy KOIN

Ammon Bundy - the son of Nevada rancher Cliven Bundy, who was involved in an armed standoff with the government over grazing rights - told The Oregonian on Saturday that he and two of his brothers were among a group of dozens of people occupying the headquarters of the Malheur National Wildlife Refuge.

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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. Below the video is this statement: "(asterisk)(asterisk)ALL PATRIOTS ITS TIME TO STAND UP NOT STAND DOWN!!! WE NEED YOUR HELP!!! COME PREPARED."

The Hammonds said they have not welcomed the Bundy's help.

"Neither Ammon Bundy nor anyone within his group/organization speak for the Hammond Family," the Hammonds' lawyer W. Alan Schroeder wrote to Sheriff David Ward.

In an interview with reporters late Saturday night that was posted on Facebook, Bundy said he and others are occupying the building because "the people have been abused long enough."

"I feel we are in a situation where if we do not do something, if we do not take a hard stand, we'll be in a position where we'll be no longer able to do so," he said.

Bundy said the group planned to stay at the refuge indefinitely. "We're planning on staying here for years, absolutely," Ammon Bundy said. "This is not a decision we've made at the last minute."

Harney County Sheriff Dave Ward told people to stay away from the building as authorities work to defuse the situation, the Oregonian reported.

"A collective effort from multiple agencies is currently working on a solution. For the time being please stay away from that area. More information will be provided as it becomes available. Please maintain a peaceful and united front and allow us to work through this situation," Ward said in a statement.

An Idaho militia leader who helped organize the earlier march said he knew nothing about activities after a parade of militia members and local residents in Burns walked past the sheriff's office and the home of Dwight Hammond Jr. and his son Steven.

About 100 protesters gathered Saturday, January 2, 2016 in Burns, Oregon, for a rally in support of a local father and son facing prison time for arson. KOIN

Ammon Bundy's father, Cliven Bundy, told Oregon Public Broadcasting on Saturday night that he had nothing to do with the takeover of the building.

Bundy said his son felt obligated to intervene on behalf of the Hammonds.

"That's not exactly what I thought should happen, but I didn't know what to do," he said. "You know, if the Hammonds wouldn't stand, if the sheriff didn't stand, then, you know, the people had to do something. And I guess this is what they did decide to do. I wasn't in on that."

His son Ammon told him they are committed to staying in the building, Cliven Bundy told Oregon Public Broadcasting.

"He told me that they were there for the long run. I guess they figured they're going to be there for whatever time it takes_and I don't know what that means," Cliven Bundy said. "I asked him, 'Well how long can ya, how long you going to stand out there?' He just told me it was for long term."

In an interview with The Associated Press at the wildlife refuge Sunday, Ryan Bundy, Ammon Bundy's brother, said the protesters' ultimate goal is to turn the land over to local authorities so people can use it free of federal oversight.

They want to "restore the rights to people so they can use the land and resources" for ranching, logging, mining and recreation.

Ryan Bundy says the federal government has been "tromping on people's rights and privileges and properties and livelihoods."

"I understand the land needs to be used wisely, but that's what we as stewards need to do. A rancher is going to take care of his own ranch," Ryan Bundy said.

Beth Anne Steele, an FBI spokeswoman in Portland, told The Associated Press the agency was aware of the situation at the national wildlife refuge. She made no further comment.

Some local residents feared the Saturday rally would involve more than speeches, flags and marching. But the only real additions to that list seemed to be songs, flowers and pennies.

As marchers reached the courthouse, they tossed hundreds of pennies at the locked door. Their message: civilians were buying back their government. After the march passed, two girls swooped in to scavenge the pennies.

A few blocks away, Hammond and his wife, Susan, greeted marchers, who planted flower bouquets in the snow. They sang some songs, Hammond said a few words, and the protesters marched back to their cars.

Dwight Hammond has said he and his son plan to peacefully report to prison Jan. 4 as ordered by the judge.

The BLM district office in Burns, Oregon, is closed until further notice. — BLM Oregon (@BLMOregon) January 4, 2016

Dwight Hammond, 73, and Steven Hammond, 46, said they lit the fires in 2001 and 2006 to reduce the growth of invasive plants and protect their property from wildfires.

"Remember: It's not about me, it's about America and somehow we have to get the wheels back on this wagon because they are flying off," Dwight Hammond told KOIN. He said he feels his upcoming prison term is a life sentence.

"I'm not very happy about that. Just don't know what to say," Hammond said. "It just seems like a little overreach for having burned 127 acres."

The two were convicted of the arsons three years ago and served time - the father three months, the son one year. But a judge ruled their terms were too short under federal law and ordered them back to prison for about four years each.

The decision has generated controversy in a remote part of the state.

In particular, the Hammonds' new sentences touched a nerve with far right groups who repudiate federal authority.

Ammon Bundy and a handful of militiamen from other states arrived last month in Burns, some 60 miles from the Hammond ranch.

In an email to supporters, Ammon Bundy criticized the U.S. government for a failed legal process.