NEW : Comodi said experts have concluded that the footprint was not Guede 's and probably was Sollecito . Briton Meredith Kercher and her former boyfriend `` killed for nothing , '' a prosecutor in their appeal says . Amada Knox and Briton Meredith Kercher were convicted in 2009 of killing Amanda Knox . Their attorneys argue police made mistakes and evidence does not support their convictions . Sollecito is scheduled to speak on Monday .
NEW : Briton Meredith Kercher and her former boyfriend `` killed for nothing , '' a prosecutor in their appeal says . Amada Knox and Briton Meredith Kercher were convicted in 2009 of killing Amanda Knox . Their attorneys argue police made mistakes and evidence does not support their convictions . Sollecito is scheduled to speak on Monday .