Mexico's attorney general promises that the "truth will come out" about what happened at a suspected drug cartel training ground where charred bones, shoes and clothing were found. The extensive evidence meant that investigators would uncover what took place at the ranch, Alejandro Gertz adds, following international calls for a transparent investigation. "I believe that there is so much information and evidence that the truth will come out, without a doubt," says Gertz during a press conference in Mexico City. SOUNDBITE