PIERRE, S.D. (AP) — A court date has been scheduled next month for an independent candidate for U.S. Senate in South Dakota who failed to make the November ballot.

A complaint was filed earlier against Clayton Walker, accusing him of perjury and filing false documents. The attorney general's office said Tuesday night that Walker had turned himself in to the Hughes County Jail and been released on personal recognizance. He is due in court July 7.

Walker hasn't responded to an Associated Press request for comment on the complaint.

Attorney General Marty Jackley in May announced that he would investigate several nominating petitions submitted by U.S. Senate candidates. Defeated candidate Annette Bosworth has been indicted on perjury and false documents charges. She calls the charges "political persecution."

Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.