MONTREAL -- Border officials have stumbled upon a different kind of Halloween surprise inside some pumpkins this year.

The pumpkins were in a passenger's luggage at the Montreal airport. And they were stuffed with approximately two kilograms of what is believed to be cocaine.

The Canada Border Services Agency says a woman was arrested today with three pumpkins in her luggage at Montreal's Trudeau International Airport.

Scanning equipment had detected masses inside the pumpkins. Those masses turned out to be bags filled with the chalky substance.

The RCMP have taken over the investigation.

A CBSA spokeswoman wasn't able to say where the passenger was coming from or whether she was a Canadian citizen.

The CBSA says that since the beginning of 2013, Montreal's airport has had 173 drug seizures. Ten of those involved cocaine -- with roughly 44 kilos seized.