Ontario provincial police say they rescued two children and arrested 31 people in what they are calling the largest child pornography investigation in the province's history.
Police said Thursday a 4-year-old boy and a 12-year-old girl were rescued.
Ninety-three charges were filed against 31 people following raids Wednesday.
Provincial Police Commissioner Julian Fantino says the arrests are a direct result of improved tools to track down alleged child pornographers on the Internet.
Police say the people arrested include three youths and a 60-year-old man.
The charges include possession of child pornography and making child pornography.