The provinces police watchdog was called into investigate an incident with the Ontario Provincial Police in Kingsville this week.
Officers responded to a suspicious vehicle on Grandview Avenue on Monday morning. After a brief investigation, one person was arrested.
A conducted energy weapon was used during the arrest.
The suspect required medical attention while in custody and was taken to the hospital by ambulance.
The Special Investigations Unit invoked its mandate and is investigating the interaction.
No further details are available at this time.