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Handout picture released by Colombian Police on September 18, 2012, showing Colombian drug lord Daniel Barrera Barrera, a.k.a. 'El Loco Barrera'. Barrera was captured in San Cristobal, Venezuela, reported Tuesday Colombian President Juan Manuel Santos, who revealed that his arrest was achieved with support from the CIA. AFP PHOTO/Colombian Police (Photo credit should read STR/AFP/GettyImages)
Handout picture released by Colombian Police on September 18, 2012, showing Colombian drug lord Daniel Barrera Barrera, a.k.a. 'El Loco Barrera'. Barrera was captured in San Cristobal, Venezuela, reported Tuesday Colombian President Juan Manuel Santos, who revealed that his arrest was achieved with support from the CIA. AFP PHOTO/Colombian Police (Photo credit should read STR/AFP/GettyImages)

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    Fmr. DEA agent: Kingpin arrest promising

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Fmr. DEA agent: Kingpin arrest promising

CNN's Becky Anderson talks to former undercover DEA agent Robert Mazur about the arrest of a drug kingpin in Colombia.

Fmr. DEA agent: Kingpin arrest promising

CNN's Becky Anderson talks to former undercover DEA agent Robert Mazur about the arrest of a drug kingpin in Colombia.