Leandro Acosta (right) and his step-sister Karen Klein (left) who are also lovers, killed their parents. Photo / Facebook
Leandro Acosta (right) and his step-sister Karen Klein (left) who are also lovers, killed their parents. Photo / Facebook
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Leandro Acosta, 25, and his step-sister and lover Karen Klein, 22, admitted murdering their parents Ricardo Klein, 54, and Miryam Kowalczuk, 52, as revenge for "years of sexual abuse".
Acosta's lawyer Monica Chirivin has recounted the horrific event.
Acosta confessed he had been planning the gruesome murders of his step-fatherand mother for some time.