A teacher has been charged in Thailand with distributing hundreds of child porn photographs over the internet.
Police said Paul Cornelius Jones had been working as a teacher
Paul Cornelius Jones, 39, originally from Cardiff, was arrested after a joint operation and faces 15 years in prison if found guilty.
Thai police said officers raided his apartment in Bangkok and found photographs of naked children after a tip-off from British authorities.
His arrest was part of an ongoing investigation which begun in 2003.
Colonel Apichart Suribunya, head of Thailand's Interpol liaison office, said Mr Jones was accused of sending photographs of naked children back to the UK over the internet.
He has lived in Thailand for seven years and police there said he had been working as a teacher at a Bangkok private school.
Officers said that Mr Jones did not appear in the photos, and that there was evidence he had sold the pictures.
The UK's Child Exploitation and Online Protection Centre (Ceop) was alerted after Mr Jones breached the terms of the sex offenders register, which required him to keep in contact with police.
Ceop chief executive Jim Gamble said: "This arrest is the culmination of a complex and dynamic enquiry across national and international borders.
"Child sex offenders who think that they can evade justice by travelling abroad should take note - Ceop's international partnerships mean that there is no hiding place."