“There were exchanges of photos during conversations [online] and what the law says, when you share a photo, that it is explicit pornographic material and that you claim that it represents a person of age minor, even if it really isn’t, it becomes child pornography,” constable Andrée East told the Canadian Press. “It’s considered as such, even if in truth it doesn’t really represent the body of a minor person.”

Yes there is an exception in Canadian legislation when such investigation techniques are used by law enforcement.