EL Salvador has built a massive 'inescapable' mega-prison ready to house 40,000 inmates in a bid to crack down on the country's gang violence.
In the new so-called Terrorism Containment Center in the world's murder capital, prisoners, will be guarded by a total of 850 police officers and soldiers.
President Nayib Bukele said in the new gigantic prison, inmates will no longer have access to "prostitutes, PlayStations, screens, mobile phones and computers."
As part of his campaign against violent crime, the new prison will be secured day and night by 600 soldiers and 250 police officers, while prison officials with assault rifles will guard the inside, making it "impossible to escape."
Electronic equipment will block cell phone signals to prevent any communication from the prison, the government has said.
Built in a remote area near Tecoluca, the prison covers 166 hectares and is believed it could be the largest prison in the world.
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Currently the title belongs to the Silivri Penitentiaries Campus in Istanbul, Turkey, according to Guinness World Records.
Bukele said the new mega-prison "is a fundamental element in finally winning the war against gangs."
Footage shared by the President on Twitter shows a prison official giving him a guided tour of the facility which was built in just seven months.
The El Salvador authorities have not said when almost 63,000 suspected gang members will be transferred to the hi-tech facility.
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The country's Deputy Justice Minister Osiris Luna said the inmates would be made to work to "compensate for some of the damage they did to society.
"All the terrorists who (caused) grief and pain to the Salvadoran people will serve their sentences... under the most severe regime," he said.
Last March El Salvador declared a state of emergency following a spike in the number of murders attributed to criminal gangs.
The state of emergency, approved by Congress, allowed arrests without warrants.
Cops stormed into neighbourhoods arresting suspected criminals - a move that has been slammed by human rights organizations.
Human Rights Watch has denounced that the country's "severe prison overcrowding" as a result of the mass arrests.
Without the newly-built CECOT, the country's 20 prisons had a total capacity of 30,000 inmates.
El Salvador's largest prison, La Esperanza, currently holds 33,000 people despite having a capacity of 10,000.
With nearly two percent of its adult population behind bars, El Salvador has the highest incarceration rate in the world.