Over 400 children found in porn ring/sex abuse bust in Canada

I wonder if any of our missing kids from the US were found in this bust?

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From Sam's link:
"It is alleged that officers located hundreds of thousands of images and videos detailing horrific sexual acts against very young children.
At the home of a retired school teacher, found over 350,000 images and 9,000 videos depicting child abuse...
All the victims identified were pre-pubescent, with some as young as five years old.