Hamilton police are investigating after a man was robbed at gunpoint at a home in Stoney Creek.
Police say a man had made arrangements to trade a pair of shoes with a person he met on the online buying and selling website Kijiji.
After the deal was completed at the home, a second person who was armed with a gun arrived at the house and robbed the victim of other high-end clothing.
No injuries were reported.
The Criminal Investigations Branch has taken over the investigation.
Hamilton police encourage the public to take precautions when dealing with online sales transactions.
Police suggest meeting in a safe, well-lit location, preferably in a public facility with security or cameras available and take a second person with you.
Residents should also be wary of last-minute changes to an agreed upon meeting location and never meet someone in a private location that is unfamiliar to you, or have people you do not know attend your home.