Occupier Sean Anderson said the four will set their weapons aside and turn themselves in at 8 a.m.
However, that plan could be complicated by the arrest of Nevada rancher Cliven Bundy, father of militant leaders Ammon and Ryan Bundy. The elder Bundy was detained around 11 p.m. at the Portland airport. Bundy is a lead figure in the so-called militia movement, and his arrest could affect the proposed surrender.
A possible resolution to the 41-day occupation came after a night of often tense negotiations between militants, the FBI, Nevada state Rep. Michele Fiore and others.
The conference call was streamed live online by Gaven Seim, a media personality who frequently posts videos in support of the occupation.
Early Thursday morning, famed evangelist Franklin Graham posted on his Facebook that he was traveling to Burns to help negotiate an end to the standoff.
“Last night I was on the phone with them for several hours, was able to have prayer with them, and they have said they would come out today,” Graham wrote. “I am on my way there and hope to be there by 7:00 AM their time.”
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