Computer evidence could prove student's innocence

A computer expert testified today in the murder trial of an American student and her former Italian boyfriend that someone had used the young man’s computer, which the defence said might have erased data that could prove his innocence.

Amanda Knox and Raffaele Sollecito have denied killing Knox’s British roommate Meredith Kercher in 2007, while Knox and Miss Kercher were studying Italian in the northern city of Perugia.