COSTA MESA, Calif. (AP) — The mayor of Costa Mesa is suing the police labor union, claiming it waged a campaign to intimidate and defame him during contract talks.

James Righeimer's suit, filed Tuesday in Orange County, accuses the Costa Mesa Police Officers' Association of privacy invasion, conspiracy, assault and civil rights violations. His wife and Councilman Steve Mensinger are also part of the suit.

The suit claims that last year, the union was involved in a failed effort to get the mayor arrested on trumped-up drunken driving allegations. It claims a private investigator working for a law firm hired by the union spied on Righeimer at a bar, where he had only a soft drink, then arranged for police to confront him at his home.

An email to the union seeking comment wasn't immediately returned Wednesday.