CCTV shows Mexican drug lord's prison escape

CCTV footage shows the moment the Mexican drug lord Joaquin Guzman escaped from prison through a tunnel dug in his cell.

Guzman, also known as El Chapo or Shorty, is the leader of the Sinaloa drug cartel.

The tunnel, 1.5km long, was dug in his shower area, and the footage shows Guzman walking in before disappearing from sight and going underground.

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