The defense has argued that Guede , who was convicted in a separate fast-track trial and is currently appealing his conviction , was the sole killer . NEW : Prosecutor accuses defense of `` lynching '' police who worked on case . Defense lawyer for Amanda Knox becomes emotional during Wednesday 's closing argument . Score: 6 Knox , an American student , is accused of murdering her British roommate in Italy .
NEW : Prosecutor accuses defense of `` lynching '' police who worked on case . Defense lawyer for Amanda Knox becomes emotional during Wednesday 's closing argument . Score: 6 Knox , an American student , is accused of murdering her British roommate in Italy .