The six men and one woman were arrested while on their way to a community meeting at a senior center 70 miles north of Burns, Oregon, KOIN reported.

Militant leader Ammon Bundy and his followers were going to address residents and discuss their views on federal management of public lands.

>> Read more trending stories  

Several hundred people had gathered at the center, but were told the "guest speakers" would not be appearing, The Oregonian newspaper reported.

>>Read: Leaders of armed Oregon group arrested, one militant dead

In a statement, the FBI and Oregon State Police said agents had made eight arrests: Bundy, 40; his brother Ryan Bundy, 43; Brian Cavalier, 44; Shawna Cox, 59; and Ryan Payne, 32, during a traffic stop on U.S. Highway 395 Tuesday afternoon. Authorities said two others, Joseph Donald O'Shaughnessy, 45, and Peter Santilli, 50, were arrested in Burns and one man man, Jon Eric Ritzheimer, 32, turned himself in to authorities in Peoria, Arizona.