Charges have been laid following an incident on the Fifth Street Bridge in Chatham.
Officers responded just after 9 last night to a report of suspicious activity and found a group of people gathered.
One man was identified as a suspect accused of trying to steal catalytic converters earlier in the day and was arrested. A search of the suspect turned up suspected fentanyl.
The 33-year-old is now facing charges of mischief over $5000 and drug possession. He was released from custody with a date in court next month.