According to a BBC report, authorities estimated the value of the drugs to be $60,000. If convicted, Ritchie faces up to eight years in prison.
Police say Ritchie arrived in Colombia on Aug. 6 and he identified her as a social worker.
The Canadian Embassy did not respond to requests for details. Columbian authorities say this is the first time they've caught someone try to smuggle drugs in this fashion.
Officials say 874 foreigners are held in Colombian lockups, most on drug charges.
— The Associated Press contributed