TORONTO - A 29-year-old woman travelling with her five-year-old son has been arrested at Toronto's Pearson International Airport for allegedly carrying 30 kilograms of cocaine in her luggage.

Border services agents found cocaine concealed under some clothing in a suitcase.

The RCMP say they believe it is the largest seizure involving a drug courier at the airport.

The woman is charged with importing cocaine into Canada and was to appear in court today in Brampton, Ont.

The woman's son is in the care of the Peel Children's Aid Society.