Joaquín "El Chapo" Guzmán wants to be extradited to a U.S. prison from Mexico as soon as possible due to harsh treatment in prison.

Guzmán's defense team said that the two-time prison escapee asked for a faster extradition to a U.S. prison, a senior Mexican law enforcement official told CNN on Wednesday. His lawyers claimed that Mexico's authorities are subjecting Guzmán to "physical and mental torture" to ensure that he doesn't escape the prison again or get too relaxed.

"He told me, literally, 'Every two hours, at night, they wake me up to take roll. ... They are turning me into a zombie. They do not let me sleep. All I want is just for them to let me sleep," attorney Juan Pablo Badillo said, as quoted by the news outlet.

The Sinaloa Cartel leader is currently imprisoned in the Altiplano maximum security federal prison, the same jail which he escaped from last July using an underground tunnel, CNN wrote.

Extradition Process

It's indefinite where Guzmán might be jailed in the United States, but he faces charges in several cities like New York and Chicago, CNN noted. The Mexican official estimated that the drug kingpin will be in an American prison within the next two or three months. However, he said in January that the procedure would take between six months and a year.

Guzmán's request to have a speedier extradition contradicted his lawyers' wishes after he was recaptured in January. Badillo said back then that Guzmán shouldn't be extradited to the United States or any country because Mexico has "just laws that are detailed in the General Constitution of the Republic," CNN further reported.

Jose Refugio Rodriguez, another lawyer of Guzmán, said the notorious drug lord instructed him to negotiate with U.S. officials for a lighter sentence and to be detained in a medium-security prison, BBC reported.

Rodriguez said his client is now isolated in Altiplano. Guzmán is complaining that his cell is "small, cold and he does not see the sun," BBC added. Guzmán said he is allowed to talk to his attorney for an hour-and-a-half every day and an hour in the prison patio. He is also permitted to a four-hour conjugal visit and a four-hour family visit every nine days.

Mexico previously opposed the U.S. government's efforts to extradite Guzmán. President Enrique Peña Nieto, however, said in late January that Mexico has been told by the Attorney General's Office to extradite Guzmán "as soon as possible," CNN reported.