Sources tell KATU News there was some sort of engagement involving shots fired as the militia group was on its way to a meeting in John Day.
Highway 395 is closed between Burns and John Day.
The details of the arrest have not yet been released, but officials say there are injuries in the area.
Bundy and dozens of other individuals occupied the wildlife refuge earlier this month after two local ranchers were sent to prison for setting fires on federal land.
Injuries reported in situation near Burns; 4 arrested including Ammon Bundy #LiveOnK2 #Oregonstandoff https://t.co/n3bBNiUa65
โ KATU News (@KATUNews) January 27, 2016
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