Infamous Sinaloa Cartel boss Joaquin "El Chapo" Guzman was seen in a video dropping his pants during a strip search in a Mexico prison after he was arrested in 2016.

In a new video released by a local news outlet, El Chapo, wearing a khaki uniform with the number 3870, was seen extending his arms and legs and dropping his trousers to his ankles after being taken in front of his cell by three security personnel wearing helmets and armored vests.

El Chapo was then ordered to do several squats that would have revealed any contraband hidden at his butt, according to Vice News.

The video footage was reportedly filmed in Mexico's maximum-security Altiplano prison back in January 2016. It was the same prison that the Sinaloa Cartel's boss had notoriously escaped from six months earlier.

After his escape attempt, El Chapo was returned to Altiplano prison and was subjected to strip search that was seen for the first time in the video published by the Dominio Publico.

The Sinaloa Cartel's boss only spent four months in the Altiplano and was transferred to the Federal Center for Social Readaptation number 9 North in Ciudad Juárez, Chihuahua, where he 

El Chapo stayed in the Chihuahua prison until January 2017, when he was extradited to the United States, where he was sentenced to life imprisonment. El Chapo is currently imprisoned at a supermax prison in Colorado.

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Strip Search Procedures in Mexico's Prison

In the unpublished images of him being strip-searched, El Chapo was also asked to remove his jacket, shoes, and socks. The Sinaloa Cartel's boss was also ordered to lift his uniform to reveal his torso and back. 

His shoes were slammed against the wall to ensure that there's nothing hidden in the pair of shoes. The video concluded with El Chapo pulling up his pants and his clothes were arranged.

The footage shows that government of Mexico also subjected the top leader of the Sinaloa Cartel to strip search.

According to the Institute for Defense Analyses that works for the U.S. Department of Defense, the Sinaloa Cartel is one of the most powerful criminal organizations in the world with presence in Mexico, U.S. and many other countries.

El Chapo was the head of the Sinaloa Cartel for years. It was considered to be one of the most violent and well-known criminal groups in Mexico. U.S. authorities said that it was the leading supplier of illegal drugs in the U.S.

The Sinaloa Cartel

The Sinaloa Cartel was not considered to be a hierarchical structure, with El Chapo and other leaders such as El Azul and El Mayo all maintained their own separate but cooperating organizations.

El Chapo's structure and later extradition to the U.S. have prompted an internal battle for the control of the organization, according to an Insight Crime report.

In 2017, an attack against El Mayo and two of El Chapo's sons were reported to be carried out by El Chapo's one-time right-hand man. The identified right-hand man was Damaso Lopez Nunez, with a moniker "Licenciado."

Meanwhile, El Chapo's wife, Emma Coronel Aispuro, has pleaded guilty in June to a range of charges, which include conspiracy to distribute illegal drugs.

Aispuro could possibly face life in prison with a fine of up to $10 million, according to a BBC News report. She also pleads guilty to playing a role in her husband's escape from prison in 2015.

Aispuro reportedly made a plea agreement. Coronel Aispuro's attorney, Jeffrey Lichtman, said that Aispuro is happy to put the case behind her. 

READ MORE: El Chapo's Sinaloa Cartel Continues to Thrive Despite the Drug Lord's Absence: Report 

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Written by: Mary Webber

WATCH: Exclusiva: Imágenes inéditas de El Chapo Guzmán en el Altiplano - From Dominio Público