A sweeping child pornography investigation led to the rescue of 386 children around the world and the arrest of 348 people, Canadian police say.
Toronto police describe the Project Spade operation as one of the largest child porn operations they've ever seen.
Police said on Thursday that the investigation began with a Toronto man accused of running a company since 2005 that distributed child pornography videos.
Police say 108 people were arrested in Canada and 76 in the US. Others were arrested in Europe.
School teachers, doctors and actors were among those arrested.
Police say the Toronto man instructed people around the world to create the videos of children ranging from five to 12 years of age, and then distributed the videos to international customers.