In a potentially stunning turn of events in the case of American student Amanda Knox, convicted of murdering her roommate in Perugia, Italy, a man also convicted of the crime is claimed to have said Knox was not there at the time of the grisly death, Italian newspapers reported Sunday.

Knox, a 22-year-old student from Seattle, and her ex-boyfriend, Raffaele Sollecito, 25, were convicted in December of sexually assaulting and murdering Leeds University student Meredith Kercher in November 2007. Her semi-naked body was found in her bedroom at the house she shared with Knox, her throat slit.

Italian newspapers now report that a third man convicted in the death, Rudy Guede, told his cellmate in an Italian prison that Knox and Sollecito were not in the Perugia home when Kercher was killed.

Instead, the cellmate reportedly said that Guede told him there was another man with him at Kercher’s home that night and that man killed Kercher while Guede was out of the room.

The cellmate was identified as Mario Alessi, a convicted murderer, and the reports said he had made a formal videotaped statement submitted to the Perugia prosecutor’s office.

But Guede's lawyers reportedly claim their client never talked to Alessi about the case and a lawyer for the Kercher family, Enzo Maresca, dismissed the cellmate's statement as "groundless," Seattle station KOMO reported.

At his own trial, Guede testified that Knox and Sollecito participated in the murder.

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