Photographs have been released of tunnels under one of the hideouts of Joaquín Guzman Loera, aka El Chapo, one of Mexico's most notorious drug lords. Guzman, who was captured in Mazatlan, had several safe houses dotted around.

Mexican attorney general Jesus Murillo Karam described an operation that took place in Culiacan focused on seven homes connected by tunnels and to the city's sewer system. The house doors were reinforced with steel, which delayed entry by law enforcement, presumably allowing Guzman to flee.

The bottom of a removable bathtub at one of Guzman's houses is seen inside a tunnel leading to the city's drainage system
The bottom of a removable bathtub at one of Guzman's houses is seen inside a tunnel leading to the city's drainage systemReuters
A steel ladder leads from the bottom of a removable bathtub to a tunnel connecting to the city's drainage system
A steel ladder leads from the bottom of a removable bathtub to a tunnel connecting to the city's drainage systemReuters
A journalist stands outside a steel door leading from the city's drainage system into a tunnel underneath one of the houses of Joaquin
A journalist stands outside a steel door leading from the city's drainage system into a tunnel underneath one of the houses of Joaquin "Chapo" GuzmanReuters
A drain exit which leads to a tunnel underneath the house
A drain exit which leads to a tunnel underneath the houseReuters
Joaquin
Joaquin "Shorty" Guzman is escorted by soldiers during a presentation at a Mexican Navy airstrip in Mexico CityReuters
Guzman inside a Mexican federal police helicopter in Mexico City
Guzman inside a Mexican federal police helicopter in Mexico CityReuters
Mexican drug kingpin Joaquin
Mexican drug kingpin Joaquin "Shorty" Guzman opens his mouth for a DNA testReuters
Military personnel outside Miramar building in Mazatlan during the raid in which Mexico's most wanted man was captured
Military personnel outside Miramar building in Mazatlan during the raid in which Mexico's most wanted man was capturedReuters
A brass band plays songs known to be favourites of Guzman during a march in Culiacan, calling for his freedom
A brass band plays songs known to be favourites of Guzman during a march in Culiacan, calling for his freedomReuters
Young women wear headbands featuring the name of captured drug lord Joaquin
Young women wear headbands featuring the name of captured drug lord Joaquin "Shorty" Guzman, calling for his freedom, in MexicoReuters
Joaquin Guzman (L), the leader of Mexico's Sinaloa drug cartel, next to an unidentified man in a photo found after a raid on a ranch
Joaquin Guzman (L), the leader of Mexico's Sinaloa drug cartel, next to an unidentified man in a photo found after a raid on a ranchReuters
Joaquin Guzman Loera is shown to the press in Almoloya, Mexico's high security jail. He escaped from Puente Grande prision in the western City of Guadalajara less than a year later in January 2001
Joaquin Guzman Loera is shown to the press in Almoloya, Mexico's high security jail. He escaped from Puente Grande prision in the western City of Guadalajara less than a year later in January 2001Reuters