Warner Music Latina pop duet Lu is breaking up, Billboard.biz has confirmed.

Lu, the boy/girl duet made up of Mario Sandoval and Patricia Cantú, released their self-titled debut in 2004. The album got off initially to a very slow start, but a subsequent repackaging and re-release got it noticed in the pair's native Mexico, where it slowly started to climb sales and radio charts.

"Lu" was eventually certified gold for sales of 50,000 copies in Mexico. The group was an anomaly at the time because it was a co-ed duet, and because its two members wrote all its music, defying the concept of a boy or girl band. Lu released a sophomore album, titled "Album," in 2006, and was publicly deemed a regional priority by Warner Music executives at the beginning of this year. "Album" was also certified gold in Mexico.

There are no immediate plans for Sandoval or Cantú to release solo projects. The pair will play one last concert on Sept. 4 at Guadalajara's Teatro Metropolitano before definitely splitting up.