Police arrested architect Joaquin Romero Aparicio during a trip to a Mexico City shopping mall. They believed he was drug lord Vicente Carillo. Aparicio spent a week in jail before DNA tests proved he wasn't Carillo. Just a few days later, Mexican police admitted the Javier Arellano they had arrested in Mexicali was not drug lord Francisco Javier Arellano Felix, but a car showroom employee with a similar name. Arellano was held and questioned for seven hours.