The Canada Border Services Agency (CBSA) says it recently seized 12 firearms from U.S. residents who were trying to enter the country with loaded guns.Authorities say the offences happened at multiple ports of entry in Southern Ontario over a period of three days.In addition to the 12 firearms, border officers also seized 18 magazines and 254 rounds of ammunition.Over 3 days, #CBSA officers at #SouthernOntario ports of entry seized 12 firearms, 18 magazines and 254 rounds of ammunition from U.S. residents. #ProtectingCanadians pic.twitter.com/5NE2nqi6y7— Canada Border Services Agency (@CanBorder) July 28, 2025Ontario borders five U.S. states which all have varying firearm restrictions and regulations.Individuals entering Canada with a firearm are required to declare the item to a border officer when they arrive at the port of entry and must have a valid purpose. Some acceptable reasons include hunting, competitions or protection from wildlife in remote areas.Gun owners are also required to provide their firearm licence and registration.According to its website, the CBSA “must be satisfied that you have a valid reason for bringing firearms into Canada, and may check to ensure that you have stored your firearms properly for transportation.”“If you do not declare the firearm or are untruthful, the CBSA may seize it, and you may face criminal charges and/or monetary penalties,” it goes on to say.