NEW : Duvalier breaks his silence and says he returned to Haiti to help . Amnesty handed thousands documents to Haitians authorities . The documents are mainly testimonies of people saying they were arrested and abused . But human rights groups have mounted pressure on Haitian authorities to take Duvalier to court on abuse charges . Amnesty International says Haiti is launching a probe into atrocities allegedly committed under Jean-Claude .
NEW : Duvalier breaks his silence and says he returned to Haiti to help . Amnesty handed thousands documents to Haitians authorities . The documents are mainly testimonies of people saying they were arrested and abused . Amnesty International says Haiti is launching a probe into atrocities allegedly committed under Jean-Claude .