Canada Border Services Agency (CBSA) officers at the Windsor-Detroit Tunnel ended the month of August by seizing five firearms from U.S. travellers.
Three separate incidents took place between Aug. 24-25.
On top of the weapons, multiple magazines, rounds of ammunition, and a THC vape were seized.
The CBSA said all three travellers were arrested, fined between $1,000 and $2,500, then returned to the U.S.