On 13 May 2005, Contreras submitted to Chile's Supreme Court a 32-page document that claimed to list the whereabouts of about 580 people who disappeared during Pinochet's rule. Human rights groups immediately questioned the information and its source, citing Contreras's years of deception and denials of responsibility for human rights abuses. Many of the details he provided were previously known, and some contradicted the findings of commissions that have investigated the disappearances. In the document he wrote that General Augusto Pinochet personally ordered these repressive measures. During the same May 2005 hearing to the Supreme Court, Contreras directly implicated the CIA and Cuban terrorist Luis Posada Carriles in the 1976 assassination of Orlando Letelier.