Mexico's Supreme Court on Tuesday unanimously struck down a law in the state of Jalisco that prohibited gay and lesbian couples from marrying.

The high court's ruling makes Jalisco only the seventh municipality where gay couples can wed, joining the states of Coahuila, Chihuahua, Quintana Roo, Nayarit and Guerrero and the federal district of Mexico City.

Last year, Mexico's Supreme Court ruled it unconstitutional for states to exclude gay couples from marriage.

But unlike the United States, such orders do not immediately affect all of Mexico's 31 states. Instead, the order set a precedence all lower courts must follow, making it possible for such couples to marry in all states provided they sue the state.

Jalisco is home to the nation's second-largest city, Guadalajara, whose metro area includes more than 4 million citizens.