The case of Felix Batista highlights the growing danger kidnapping gangs pose south of the border.
One month ago, an American expert on kidnapping was himself abducted in northern Mexico.
Felix Batista had been invited to the relatively quiet city of Saltillo to give seminars on corporate security.
Batista worked as a private hostage negotiator, and his former employer says he successfully resolved nearly a hundred kidnappings.
JASON BEAUBIEN: This week in Miami, Felix Batista's wife, Lourdes, made an impassioned plea for her husband's life.
Local officials say they're not calling his disappearance a kidnapping because so far, there's been no ransom demand.
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