American student Amanda Knox, appealing against her conviction for murder, clashed in an Italian court on Monday with one of the two men found guilty with her of killing her British flatmate.
Knox, 23, and her former Italian boyfriend Raffaele Sollecito have been sentenced to 26 and 25 years in jail respectively for the murder of Meredith Kercher, who was found half-naked with her throat slit in the flat she shared with Knox in the university city of Perugia.
Rudy Guede, an Ivorian who is serving a 16-year sentence for his own role in the murder, denied evidence from a convicted child killer, Mario Alessi, that Guede confided to him while they were in prison together that Knox and Sollecito had nothing to do with the killing.
Guede, brought into the Perugia courtroom handcuffed and dressed in jeans, said Alessi's evidence was "all lies", adding that they had never discussed the murder and that Alessi was clearly being manipulated by others.
He said he still stood by the contents of a letter he wrote to his lawyers last year referring to "the horrible murder of a splendid girl by Raffaele Sollecito and Amanda Knox."
Guede denies killing Kercher but, unlike Knox and Sollecito, he has admitted being at the crime scene the night of the murder and DNA evidence showed he had had sex with her.
Knox, in a navy blouse with her light brown hair tied up, exchanged glances and smiles with Sollecito as she listened to Guede's testimony. She then told the court in a brief statement that she was "shocked and anguished" by his words and appealed to him to "tell the truth".
"He knows that we weren't there, the only time that Rudy, Raffaele and I have been together is in a courtroom," she said. "I'm sorry I can't tell him that the best way to make up for your mistakes is to tell the truth".
Prosecutors say it was the result of an extreme sex game that turned violent, but the defendants have always protested their innocence and Knox's family, friends, and some U.S media have said her conviction was a miscarriage of justice.
The appeals trial began in November last year.