Authorities in Latin America and Europe say more than 500 people have been targeted for arrest for their alleged involvement in an Internet pedophile ring.
Police in Spain have detained 19 people, while other arrests are under way in 11 other countries, including Mexico, Chile, Argentina, France, Italy and Sweden.
Spain's Interior Ministry says the investigation, which began in January, was prompted by a Spaniard who reported seeing child pornography in a chat room. The ministry said police identified more than 900 addresses from which people logged into the site.
The investigation has led authorities to more than 20,000 items found on the site, including videos and photos.