A former interrogator from the Brazilian intelligence agency DOI, Riscala Corbaje, has related how he was involved in the torture of over 500 people between 1970 and 1972. He made the admission in his testimony to the transitional justice group of the public ministry, reports O Globo.
According to Corbaje - known back then by his code name Nagib - the most effective torture method was the pau de arara (parrot's perch). Apparently, other forms of pain such as electric shock were "unnecessary" if this agonising position was used.
Corbaje appealed to the committee to be "left in peace", but he also said he did not have a guilty conscience.