MADRID (AP) — Spanish police say they have arrested one of Mexico's most sought-after sex offenders, a man who allegedly took part in a sexual assault of a minor along with other men last year.

Police said the man was arrested in Madrid early Saturday on a Mexican arrest warrant. He faces charges of group pedophilia, which carry a sentence of 12-40 years in prison.

He is expected to be extradited to Mexico.

The suspect and three other men of wealthy background became known derisively on social media as "Los Porkys" after a father publicly accused them of assaulting his daughter in the eastern Mexican state of Veracruz in January 2015.

One of the other suspects has already been arrested in Mexico. The men have denied wrongdoing.