Okla. Stat. tit. 21, § 545

Every person who, directly or indirectly, utters or addresses any threat or intimidation to any judicial or ministerial officer, to any juror, referee, arbitrator, umpire or assessor or other person authorized by law to hear or determine any controversy, with intent to induce him either to any act not authorized by law, or to omit or delay the performance of any duty imposed upon him by law, is guilty of a misdemeanor.