Provincial Police and paramedics converged Friday night on the fairgrounds in Dryden after what appears to be an assault using some sort of irritant spray.
Dryden OPP are asking anyone with video evidence of the attack to contact them.
No details have been released on the extent of any of the injuries.
Earlier this month a similar incident occurred in Thunder Bay at the CLE injuring two people.
One person faces assault and weapons related charges.
