CANCUN, Mexico — A state prosecutor says one of the U.S. FBI's 10 most wanted fugitives has been arrested in the resort city of Playa del Carmen.

Prosecutor Gaspar Armando Garcia Torres says Walter Lee Williams, 64, is wanted on charges of sexual exploitation of children and traveling abroad for the purpose of engaging in sexual acts with children.

Garcia said Williams was captured late Tuesday while drinking coffee near a park in the Caribbean beach town.

A federal arrest warrant was issued for Williams in Los Angeles in April, according to the FBI website.

Garcia said he didn't know how long Williams had been in Playa del Carmen.