Miss. Code Ann. § 73-3-309

Complaints, irrespective of source, touching upon the professional conduct or conduct evincing unfitness for the practice of law made against attorneys who are members of the bar of this state or who may be temporarily practicing in this state under any rule of comity or courtesy, that may be received by or that may come to the attention of any judicial officer, the board of commissioners or any members of the Mississippi State Bar, shall be referred to the committee on complaints for preliminary investigation and such disposition or further action as may be appropriate. The complaint must be in writing and signed by the person making the complaint or charge and the complaint must be sworn to or supported by affidavit or the signature of the complaining party witnessed by two (2) persons twenty-one (21) years of age or older. Additionally, the complaint shall contain the street address of the complaining party and each witness.