An allegation of a threat with a knife has Lakeshore Provincial Police looking to identify a vehicle and 3 men who were inside.
The OPP says the incident happened at the Flying "J" gas bar just west of Tilbury on County Road 42 early Sunday morning.
Police say it was reported one of the men in the car threatened another customer at the service centre with a knife.
The car is believed to be a black 1990's era Chevy Camaro.
It had tinted windows and 4 square headlights.
Police were told the car has a white "dealer" license plate with red letters and could have included the digits "185"