Montreal police spokesperson Const. Raphael Bergeron later confirmed to CBC News that a 39-year-old man was taken into custody once the plane landed.
"The person was uttering threats toward the staff. He was intimidating other passengers, so the decision was made to turn around," he said.
The man faces charges of public mischief and uttering threats, among other possible charges, Bergeron said.
"There was no threats about terrorism or anything like that — it was more like behaviour that was aggressive."
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