The ringleader of an international network who shared up to 100,000 indecent images of children on Facebook has been jailed for four years. Convicted sex offender Ian Green, 45, from West Sussex, admitted 24 charges of making, possessing and distributing indecent images of children. The court heard how Green would allow certain contacts to access private groups and share their own images. Chichester Crown Court heard Green, of Littlehampton Road, Worthing, used 11 different Facebook accounts to distribute the images, along with indecent videos of children. He also shared the photographs, 724 of which were rated at the most extreme level of "five", using email and MSN. An international investigation into the network began when police in Australia linked a number of Facebook accounts containing indecent images of children to a user in the UK. see also press release (Australian Federal Police). Australian warning over Facebook paedophile ring (AFP) Australian police warned social networking sites to be alert to illegal child sex activity, after cracking an alleged paedophile porn ring operating on Facebook. Australian Federal Police (AFP) said Facebook had been integral in helping international law enforcement agencies dismantle an alleged child pornography syndicate, resulted in 11 arrests in Australia, Britain and Canada. In a joint statement with the AFP, Facebook's chief security officer Joe Sullivan said the popular networking site immediately took action once alerted to the offensive activity and was working with police.