(GUARDIAN) — Italian prosecutors have filed an appeal against the acquittal of Amanda Knox and Raffaele Sollecito for the murder of the British student Meredith Kercher in Perugia.

Knox and Sollecito were initially handed 26- and 25-year sentences for the fatal stabbing of Kercher, who was found partially clothed with her neck slashed in her apartment in November 2007.

The pair were acquitted on appeal last October after a court ruled that Knox had been pressured to make compromising statements during interrogation and that key DNA evidence was poorly handled.

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