(AP) Attorney General Tom Horne is suing the state's campaign finance commission to try to block its investigation into him.
The suit contends the Citizens Clean Elections Commission lacks the authority to investigate candidates not participating in Arizona's public campaign funding system. The commission voted last month to investigate former Horne staffer Sarah Beattie's allegations to see whether Horne's campaign received in-kind contributions.
Commission Executive Director Tom Collins says the commission does have authority to investigate the allegations. Horne has denied the allegations, although he acknowledged in a formal response that some staff may have done a small amount of work on state time.