SEATTLE - (AP) - Amanda Knox is back on American soil after fouryears in an Italian prison.

A British Airways plane carrying Knox and her parents fromLondon landed Tuesday evening at Seattle-Tacoma InternationalAirport.

The 24-year-old Seattle native was freed after an Italianappeals court on Monday threw out her conviction in the sexualassault and fatal stabbing of her British roommate. The Universityof Washington student was studying abroad in Perugia.

The conviction was overturned amid doubts over DNA evidence.Prosecutors insist she was among three people who killed21-year-old Meredith Kercher.

Knox has become a tabloid staple on two continents.

A family spokesman says Knox's parents and her legal adviser areexpected to speak to reporters.

Italian appeals court clears Knox of murder