Authorities believe three pumpkins found in a woman's luggage at the Trudeau International Airport in Montreal airport on Thursday were stuffed with approximately 2 kilograms (4.4 pounds) of cocaine.
Scanning equipment had detected masses inside the pumpkins. Those masses 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.
The Associated Press contributed to this report.