A federal judge on Friday declared Arizona's ban on gay marriage unconstitutional.

U.S. District Court Judge John Sedwick sided with plaintiffs in two separate cases challenging Arizona's ban.

Arizona is one of the three states affected by two rulings out of the Ninth Circuit Court of Appeals in San Francisco striking down bans in Nevada and Idaho. The rulings create a precedent in the circuit that lower courts must follow.

Arizona's constitutional amendment, approved in 2008, defining marriage solely as a heterosexual union is unconstitutional because it denies “same-sex couples the equal protection of the law,” Sedwick wrote.

“[D]efendants are hereby ordered to permanently cease enforcement of those provisions of Arizona law declared unconstitutional by this order. The court declines to stay the effect of this order. Defendants' cross-motion for summary judgment is denied as moot,” he added.

“It is also clear … that the High Court will turn a deaf ear on any request for relief from the Ninth Circuit's decision,” Sedwick added, a reference to the numerous requests the Supreme Court has already denied in other cases.