A Brazilian rancher facing charges in the death of a 73-year-old American nun has been arrested again for fraud and slavery in the same Amazon region where the nun was shot three years ago, reports CNN. Evidence supporting the latest charges will be used at his murder trial. Four others have already been convicted of killing Sister Dorothy Stang, who fought for peasants' property rights. New action in the case follows release of acclaimed film They Killed Sister Dorothy. (More Brazil stories.)