Okla. Stat. tit. 51 § 94
It shall be the duty of the Attorney General of this state, when directed by the Governor, or upon notice being received by the Attorney General in writing and verified by fifteen or more reputable citizens of the county or by one percent (1%) of the registered voters that voted in the previous election for the political subdivision of which the officer who is the subject of the complaint is an official, whichever is greater, before some officer authorized to administer oaths, that any officer herein mentioned has been guilty of any of the acts, omissions or offenses as set out in Section 93 of this title, to investigate such complaint, and if on such investigation the Attorney General shall find that there is reasonable cause for such complaint, the Attorney General shall institute proceedings in the Supreme Court, or any district court of the county of the residence of the accused, to oust such officer from office.
Okla. Stat. tit. 51, § 94