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.
COMMENT RULES: Comments that are judged to be defamatory, abusive or in bad taste are not acceptable and contributors who consistently fall below certain criteria will be permanently blacklisted. The moderator will not enter into debate with individual contributors and the moderator’s decision is final. It is Belfast Telegraph policy to close comments on court cases, tribunals and active legal investigations. We may also close comments on articles which are being targeted for abuse. Problems with commenting? email@example.com