Police were called to an address at around 11 p.m. on Thursday night for reports of a robbery.
Police said three suspects, including one with a gun, got into a house through an unlocked back door and demanded marijuana from the homeowners.
A brief scuffle ensued and one of the victims received minor injuries, OPP said in a news release.
The three suspects fled the scene in a dark-coloured car with a loud exhaust pipe.
Anyone with information is asked to call Wellington County OPP’s Major Crime Unit at 1-888-310-1122.
Anonymous tips can be left with Crime Stoppers at 1-800-222-8477 or on their website.