27 June 2011 Last updated at 10:05 ET

by Biodun Iginla, BBC News

Amanda Knox is serving a 26-year sentence for Meredith Kercher's murder

Amanda Knox and her ex-boyfriend did kill Meredith Kercher, the first man convicted of the Briton's murder has told an Italian appeal court.

In dramatic courtroom scenes, Rudy Guede confirmed that he believed the US student killed her housemate.

Knox responded by standing up and saying she was "shocked and anguished".

Knox, 23, and her ex-boyfriend Rafaelle Sollecito, 26, are appealing against their convictions for killing Meredith Kercher, 21, in Perugia in 2007.

Miss Kercher, of Coulsdon, Surrey, was found with her throat cut at her Perugia flat after what prosecutors claimed was a sex game taken to the extreme.

Knox is serving a 26-year sentence for Miss Kercher's murder while her Italian co-defendant Sollecito was sentenced to 25 years.

Guede told the court that claims by a fellow prison inmate that he thought Knox and Sollecito were innocent were not true. He said he never made that claim to the inmate.

On 18 June, convicted child killer Mario Alessi told the appeal Guede had confided that Knox and Sollecito were innocent.

According to Alessi, Guede said he and a friend went to the house Miss Kercher shared with Knox with the intent of having sex with Miss Kercher and that when she refused, the scene turned violent and his unnamed accomplice slit her throat.

Guede admits being in the house at the time of the Miss Kercher's murder but denies any involvement

'Cursed night'

Drug-dealer Guede was jailed for 30 years for the sexual assault and murder of Miss Kercher after a separate fast-track trial. His sentence was reduced to 16 years on appeal.

Guede was in the witness stand as his letter was read to the court on Monday.

"This splendid, marvellous girl was killed by Raffaele Sollecito and Amanda Knox," the letter said.

Guede has previously admitted being in the house at the time of the murder, but denies involvement in Miss Kercher's death.

After cross-examination by the defence, Guede is reported to have said he had always believed Sollecito and Knox were behind the murder.

"I've always said who was there in that house on that cursed night," he told the court.

'Shocked and anguished'

BBC correspondent Duncan Kennedy said it was the first time since the killing four years ago that all three defendants had given evidence on the same day and there were "dramatic scenes" in court.

Knox stood up after Guede's evidence and denied his claims.

"The only time that Rudy Guede, Raffaele and I were in the same space has been in court. I'm shocked and anguished.

"He knows we weren't there and have nothing to do with it," she said.

Sollecito said Guede was always talking "about a shadow that could be me and a voice that could be Amanda's... we've been fighting shadows for four years. Our lives have been destroyed in a subtle and absurd way."

Speaking before Monday's hearing, Knox's mother Edda Mellas told reporters she hoped that Guede would have the "integrity to stand up and tell the truth".

She said her daughter was "always very anxious and nervous but I think she's glad things are moving along. She feels things are going well," but that it is, "hard to get too hopeful, especially after the first trial."

Europe

by Biodun Iginla, BBC News

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by Biodun Iginla, BBC News

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