A convicted child murderer testified Saturday at the appeals trial for Amanda Knox, saying that a fellow inmate had told him the American student had nothing to do with her British roommate's slaying.

    Amanda Knox sits in court during her appeal trial at the Perugia ------->
[abcnews.go.com]

Knox was convicted of sexually assaulting and murdering British student Meredith Kercher in the house the two shared in Perugia, and sentenced to 26 years in prison. Her co-defendant and ex-boyfriend, Raffaele Sollecito of Italy, was also convicted and sentenced to 25 years.