A former college professor in the US who was on the FBI's "10 most wanted" list over allegations of child sex abuse has been arrested in Mexico, officials said.
Walter Lee Williams was detained Tuesday, CNN reported.
The Federal Bureau of Investigation (FBI) had put the former university professor on the list for alleged sexual exploitation of children.
Williams researched in the field of gender development at a university in California, which gave him easy access to his victims, mainly teenage boys in developing countries, the FBI said.
Officials believe he stayed in Indonesia, Polynesia and Thailand, but also may have travelled to Mexico and Peru.
An FBI agent found child pornography on a computer and in a video camera belonging to Williams.
The FBI offered $100,000 for information leading to his arrest.
Williams' photo appeared in Mexican newspapers identifying him as a fugitive. Police arrested him in a cafe in Playa del Carmen.
