PORTLAND, Ore. -- A defense attorney for one of the defendants on trial for the armed takeover of a federal wildlife refuge in Oregon has asked a judge overseeing jury deliberations to dismiss a juror over allegations of bias.

Marcus Mumford, the attorney for defendant Ammon Bundy, said in the motion filed early Wednesday that if Juror No. 11 is not dismissed, the court should declare a mistrial.

Another juror sent a note Tuesday stating a juror had declared he was "very biased" during deliberations.

U.S. District Judge Anna Brown says the juror is a man who worked for the Bureau of Land Management 20 years ago.

Another federal land management agency - the U.S. Fish and Wildlife Service - oversees the Malheur National Wildlife Refuge, which Bundy and six others took over for 41 days in January