Amanda Knox Found Guilty in Murder Retrial

Amanda Knox (L), the U.S. student convicted of murdering her British flatmate Meredith Kercher in Italy in Nov. 2007, arrives at the court during her appeal trial session in Perugia, Sept. 30, 2011.

American exchange student Amanda Knox says she is "frightened and saddened" after being re-convicted in the stabbing death of her roommate when they were students in Italy in 2007.

An appeals court in Florence Thursday sentenced Knox to 28 years and six months in prison. It also convicted her Italian ex-boyfriend, Raffaele Sollecito, sentencing him to 25 years and banning him from traveling.

Knox is at her home in Seattle where she returned after her earlier conviction was overturned in 2011.

Knox and Sollecito have maintained their innocence.

But in March, Italy's top criminal court overturned the acquittal, ordering a retrial.

Prosecutors have said Meredith Kercher, a British student who lived with Knox when the two were exchange students in Perugia, Italy, was killed in their house when a sex game turned violent.

A third suspect in the case, former drug dealer Rudy Guede, was given a 30-year prison sentence, which was later reduced to 16 years.