Operation Cathedral was a police operation that broke up a major international child pornography ring called The Wonderland Club operating over the Internet. It was led by the British National Crime Squad in cooperation with 1,500 officers from 13 other police forces around the globe, who simultaneously arrested 104 suspects in 13 countries (including Australia, Belgium, Finland, France, Germany, Italy, Sweden, the UK, and the US) on 2 September 1998. The case received widespread international attention due to the highly organised nature of the ring, leading to public concerns of online child sexual abuse and legislative changes in the UK.