Luciano Aviello says his brother told him he killed Meredith Kercher in botched robbery . The lawyer for the family of a British student who was found dead last month at her home said Tuesday that police have not been able to find any evidence linking her death to an alleged robbery. Amanda Knox 's lawyers want Aviello 's story investigated for her appeal . He said he had broken into a house and killed a girl Knox , her former boyfriend were convicted of murdering Kercher in December 2009 .
Luciano Aviello says his brother told him he killed Meredith Kercher in botched robbery . The lawyer for the family of a British student who was found dead last month at her home said Tuesday that police have not been able to find any evidence linking her death to an alleged robbery. Amanda Knox 's lawyers want Aviello 's story investigated for her appeal . Knox , her former boyfriend were convicted of murdering Kercher in December 2009 .