A Canadian woman used a fake pregnant belly prop to try to smuggle drugs out of Colombia, according to police.

Colombian authorities say they arrested the woman at the El Dorado airport in Bogota with 2kg of cocaine.

Ritchie Tabatha Leah, a 28-year-old social worker, had entered the country on 6 August from Toronto.

She was arrested after trying to board a plane back to Toronto.

When an anti-narcotics inspector asked how far along in her pregnancy she was, Ms Leah responded seven months.

The inspector then touched Ms Leah's stomach and felt that it was cold and hard, encouraging further inspection.

Upon inspection, authorities said two sealed cocaine packages were found underneath the latex belly prop tied to Ms Leah's back.

Deputy Director of the Anti-Narcotics Police department Colonel Esteban Arias Melo confirmed the arrest and said: "The Canadian citizen tried to fool public security forces by faking a pregnancy."

If convicted for drug trafficking, Ms Leah could face up to eight years in prison.

Ninety-four foreigners have been arrested at international airport terminals in Colombia trying to smuggle drugs since the start of 2013.