Ammon Bundy, the leader of an armed seizure of a federal wildlife refuge in Oregon, was arrested and one was person was killed Tuesday night in rural Oregon, the F.B.I. and the Oregon State Police said.
Five other people, including Mr. Bundy’s brother Ryan Bundy, were arrested, the authorities said.
Ammon Bundy’s group, which had adopted the name Citizens for Constitutional Freedom, has occupied a handful of buildings at the Malheur National Wildlife Refuge, about 30 miles southeast of Burns, in Harney County, since Jan. 2. The refuge is operated by the United States Fish and Wildlife Service.