Investigations include the 1999 Operation Cathedral which resulted in multi-national arrests and 7 convictions as well as uncovering 750,000 images with 1,200 unique identifiable faces being distributed over the web; Operation Amethyst which occurred in the Republic of Ireland; Operation Auxin which occurred in Australia; Operation Avalanche; Operation Ore based in the United Kingdom; Operation Pin; Operation Predator; the 2004 Ukrainian child pornography raids; and the 2007 international child pornography investigation.[84] A three-year Europol investigation, dubbed Operation Rescue, based on the activities of boylover.net, a popular pedophile chat room, netted over 150 arrests and the rescue of 230 children in 2011. The principal of boylover.net, Israeli-born Dutch citizen Amir Ish-Hurwitz, was jailed 17 March 2011 in the Netherlands.