Ontario's police watchdog is investigating the circumstances involving the death of a man near North Bay.
The Special Investigations Unit says Ontario Provincial Police pulled over a vehicle in the community of Bonfield on Thursday.
The SIU says the driver was arrested but shortly after he suffered some form of medical distress in the back seat of a police cruiser.
The 49-year-old man was later pronounced dead.
The SIU is automatically called in to review police handling of cases that involve death or serious injury.
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