An associate of Schaeffer Cox, the Fairbanks militia leader arrested last spring, who was picked up by FBI agents with a material witness warrant earlier this month has been released and returned to Fairbanks.

Alaska resident Michael Anderson was arrested with Cox and several other people last spring.

Anderson was a co-defendant with Cox and three others in a under a now-defunct state case that accused them of making a plan to kill Alaska State Troopers and court officials, the Fairbanks Daily News-Miner reports.

Anderson was freed in October when the state dismissed conspiracy charges against him, but a judge ruled he should be held for a week on a material witness warrant to testify before a grand jury because a subpoena was insufficient.