The last four armed occupiers at Oregon's Malheur National Wildlife Refuge say they plan to turn themselves in at 8 a.m. PT Thursday. A livestream set up to broadcast the remaining hours in the standoff at the federal property stopped after more than five hours Wednesday night when the group headed to their night camp. "We're not surrendering. We're turning ourselves in. It's going against everything we believe in," said Sean Anderson, one of the occupiers. The news came after Cliven Bundy, the father of former Oregon occupiers Ammon and Ryan Bundy, was arrested at Portland International Airport late Wednesday on his way to the refuge. The 40-day standoff escalated Wednesday when FBI authorities surrounded the facility after 27-year-old David Fry drove outside of the encampment then allegedly sped back as an agent approached. Nevada legislator Michele Fiore, a Republican supporter of the protesters, drove to the refuge to try to help negotiate a surrender. Cliven Bundy faces federal charges related to the 2014 standoff at his ranch over federal control of public lands.