A total of 341 people around the world have been arrested following an investigation into a website that allegedly distributed videos and images of child exploitation, police in Canada said.
Toronto Police Service said they were able to "determine the identities of customers of this website from around the world" and helped to pass on intelligence to more than 50 countries.
No British police forces are mentioned in the press release, although the An Garda Síochána of Ireland is among 11 agencies singled out as having participated.
Police said the three-year investigation resulted in 386 children being rescued from child exploitation.
There were tense scenes in Toronto City Council today as mayor Rob Ford resisted calls to take a break from his duties after admitting to smoking crack among other scandals.
Asked by one councillor whether he had bought illegal drugs in the last two years, Ford answered "Yes I have" but went on to insist he did not have a drink or drugs addiction.
Ford is facing pressure to stand aside after councillors voted almost unanimously for a petition calling on him to take a break from his duties "to address his challenges privately".
Six months ago, a newspaper reported it had acquired a video of him smoking crack. Last week, another video emerged that showed him in an expletive-laden rant threatening murder.
Rob Ford is considering undergoing treatment, according to the Globe and Mail, after a video emerged of the Toronto mayor threatening to kill someone.
Mr Ford apologised over the expletive-ridden video earlier today, adding that he had been "very inebriated".
“He’s considering options,” Dennis Morris, the mayor’s lawyer and a long-time family friend, told The Globe and Mail in an interview Friday. “And we’ll stay tuned to see what he says in the next few days.”
Watch the video in full on the Toronto Star website
Toronto mayor Rob Ford has apologised for an expletive-ridden video in which he threatens to kill someone.
Mr Ford said he had been "very inebriated" while the video was shot and that the incident was "extremely embarrassing".
Footage obtained by the Canadian newspaper the Toronto Star shows the city's mayor threatening to murder someone.
The video contains strong language throughout.
"I'm going to kill that fking guy, I'm telling you it's first-degree murder...he dies or I die brother," the Mayor is heard to say.
Watch the video in full on the Toronto Star website
The family of embattled Toronto mayor Rob Ford have spoken out in his defence, insisting that while he has made mistakes, "it isn't like it has affected his work."
Speaking to a local TV station, his mother Diane Ford said:
"It's not acceptable behaviour. He is the mayor of the city."
But she added that he had done good work for Toronto and would not resign.
“He’s got a huge weight problem and he knows that. And I think that is the first thing he has to attack," she said.
The mayor of Toronto Rob Ford has been caught threatening to kill someone in footage obtained by a Canadian newspaper.
The expletive-ridden footage, which appears to have been captured on a camera phone, shows a suit-wearing Ford pacing a room and waving his arms around as he discusses the violent act.
"I'm going to kill that f**king guy, I'm telling you it's first-degree murder...he dies or I die brother," the Mayor is heard to say.
"When he's down I'll rip his f**king throat out. I'll poke his eyes out," the 44-year-old continues.
Toronto mayor Rob Ford has been captured making an expletive-laden rant and behaving erratically in a video obtained by a Canadian newspaper.
The Toronto Star today published new footage of the politician, who this week admitted to smoking crack cocaine, in an apparent state of supreme agitation.
Ford is heard in the midst of a foul-mouthed rant in which he uses threatening words such as "kill" and "murder", although the target of the mayor's anger is not clear.
Ford has said he was "very, very inebriated" in the video, the Associated Press reported.
Mayor Rob Ford told the Toronto Sun: "I feel like I got 1,000 pounds off my back. I felt I had to say it. It is what is. I feel two inches high right now but I needed to deal with it. I am not going to quit or take a leave."
"I am not an addict or an alcoholic. I have work to do and I am moving on. The way I see it now, this is over."
He insisted: "I am not a crackhead or junkie."
Despite admitting that he smoked crack cocaine Toronto Mayor Rob Ford has said that he was elected to do a job and he will continue to do it.
In a speech which many had assumed would signal his resignation the mayor apologised but said that voters would have the chance to make the decision about whether they wanted him to remain in next year's scheduled election.
Mr Ford said: "With today's announcement I know I embarrassed everyone in this city and I will be forever sorry. There's only one person to blame for this and that is myself.
"I can't explain how difficult this was to do I hope, I hope, that nobody but nobody has to go through what I have gone through.
"I know I have to regain your trust and your confidence. I love my job, and I love this city, love saving tax payers money and I love being your Mayor. For the sake of the tax payers of this great city, for the sake of the tax payers, we must get back to work, immediately.
"I was elected to do a job and that's exactly what I'm going to continue doing. I sincerely, sincerely, sincerely apologise."
Mr Ford's final words were greeted with laughter, as he finished his speech saying: "God bless the people of Toronto."