US police say they have arrested the leader of an armed militia which has occupied a wildlife refuge in Oregon, with one person killed in a shootout.
Ammon Bundy and four others were arrested during a traffic stop. One person was injured. Three others were held in separate incidents.
The militia occupied the refuge on 2 January to support two ranchers jailed for setting fire to federal land.
It says the government has taken land illegally from ranchers for decades.
Other members of the group were reportedly still at the Malheur National Wildlife Refuge in eastern Oregon, where the FBI was setting up a perimeter.
FBI officials said in a statement that Mr Bundy, 40, was arrested in a traffic stop on Highway 395 along with his brother Ryan Bundy, 43, Bryan Cavalier, 44, Shawna Cox, 59, and Ryan Walen Payne, 32.
Two other activists connected to the group, Joseph Donald O’Shaughnessy, 45, and Peter Santilli, 50, were later arrested, separately, in Burns, Oregon.
Each of the defendants faces a charge of conspiracy to impede police from discharging their official duties through the use of force, intimidation, or threats, the FBI said.
According to the Oregonian newspaper, Mr Bundy was en route to a community meeting in John Day, Oregon, where he was scheduled to be a guest speaker, when authorities stopped his vehicle.
The newspaper said Ryan Bundy was injured in the arrest, suffering a minor gunshot wound. Authorities did not release the identity of the person killed.
However, local media named the man as Arizona native Robert “LaVoy” Finicum, a regular spokesman for the group.
His daughter, Arianna Finicum Brown, told the Oregonian he was a “good, good man, through and through”.
Some 25 miles (40 km) of Highway 395 was shut in both directions following the incident, local officials said.
The Pacific Patriots Network, an umbrella group for regional militias, said it would “not pursue any action until all of the facts have been pieced together”, adding: “During this time, cooler heads must prevail.”
Another occupier of the refuge, Jon Eric Ritzheimer, 32, surrendered to police in Arizona on Tuesday night.