Authorities believe three pumpkins found in a woman's luggage at Trudeau International Airport in Montreal were stuffed with approximately two kilograms (4.4 pounds) of cocaine.
Scanning equipment had detected masses inside the pumpkins which turned out to be bags filled with the chalky substance.
A border agency spokeswoman was not able to say where the passenger was coming from or whether she was a Canadian citizen.
The Royal Canadian Mounted Police have taken over the investigation.
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