Joaquin "El Chapo" Guzman stands in his cell at the Altiplano Federal Prison in Mexico. Increased security measures are being used by authorities to make sure the cartel kingpin doesn't break out of prison for a third time. His most recent escape came in July, when he got out through a hole in the floor of his cell's shower stall. The images in this gallery were obtained by Mexican journalist Carlos Loret de Mola.
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Military vehicles and canine officers guard the Altiplano prison.
CarlosLoret.com
Guards walk down a hallway of the prison, which has installed 400 new cameras. Authorities hope to add another 600 by April.
CarlosLoret.com
An X-ray machine is guarded at the prison's entrance.
CarlosLoret.com
A body scan machine is also at the front entrance.
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An officer operates the body scan machine.
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An officer at the entrance swabs a visitor to detect explosives.