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PHOENIX - Four couples have filed a class-action lawsuit seeking to make same-sex marriage legal in Arizona.

The suit filed Monday claims a voter-approved ban on gay marriage is unconstitutional.

It seeks to allow same-sex couples to be married and recognize same-sex marriages conducted in other states.

Phoenix radio station KTAR reports the suit names Arizona Gov. Jan Brewer and Attorney General Tom Horne among the defendants.

Some of the couples who filed the suit are legally married in other states.

Should the plaintiffs win the case, Arizona would become the 19th state to recognize same-sex marriages.

New Mexico and Utah legalized gay marriage last month. However, the U.S. Supreme Court put a hold on same-sex marriage in Utah on Monday.