Knox killed Kercher 'during row, not sex game'
The Italian court that found Amanda Knox guilty of murder in January has said she killed her British flatmate because of a domestic argument, rather than during a sex game, and that she herself wielded the knife.
That conviction was overturned on appeal and Knox returned to the United States in 2011, but both were found guilty again at a retrial of the appeal.
Knox and Sollecito both proclaim their innocence. A third person, Rudy Guede, is serving a 16-year sentence for his part in Kercher's murder in Perugia
In its explanation of the January verdict, the Florence court said the theory that was used to convict the pair – that they killed Kercher in a sex game gone wrong – was not plausible.
Instead, the murder occurred because Kercher and Knox had an argument about flatmate issues which then escalated,. Knox, Sollecito and Guede attacked Kercher together and pushed her into her bedroom, the court said.
Guede assaulted her to "satisfy his sexual instinct" while Sollecito and Knox participated "in a desire to abuse and humiliate the English girl".
The three then killed Kercher so she could not report the sexual assault, the court said. A knife found in Sollecito's house "was one of the two weapons used in the murder, and was the one that was held by Amanda Knox, it said.