Prisoners in El Salvador had a naked party with strippers to celebrate the Day of the Virgin of Mercy, the country’s central prison authority confirmed.

Video footage emerged late last week of tens of detainees, incarcerated in Izalco penitentiary, partying with naked dancers.

The Infobae news website says the prisoners were commemorating the patron saint of criminals and the accused.

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Rodil Hernandez, El Salvador’s prisons director, said the party took place in September 2012 and involved a number of strippers and a DJ.

The Central American country’s attorney general, Douglas Melendez, reportedly met recently then-President Mauricio Funes to obtain more information on the incident.

The notorious Izalco prison hosts members of the 18th Street Gang, also known as Barrio 18 or Mara 18, who were in a truce with Funes’ government at the time of the naked party.