Italy opens new slander trial against Amanda Knox

Amanda Knox was convicted of the killing before being exonerated in a case that grabbed the global spotlight (Antonio Calanni/AP)

Amanda Knox was back on trial for slander on Wednesday for wrongly accusing a Congolese man of murdering her British roommate while the young women were exchange students in Italy.

Ms Knox herself was convicted of the killing before being exonerated in a case that grabbed the global spotlight.