BBC News, Mexico City
The suspected head of the drug trafficking gang known as the Juarez cartel has been caught in Mexico City.
Ricardo Garcia Urquiza, also known as "the doctor", was caught with eight aides earlier this month, the attorney general's spokesman told the BBC.
They were arrested in a middle class shopping centre in Mexico City.
Attorney General Daniel Cabeza de Vaca said "the doctor" was probably one of the most important drug traffickers ever arrested.
He said his arrest was a mortal blow to the Juarez cartel.