Knox's Alleged Murder Weapon Doesn't Match Wound: Coroner

The knife prosecutors believe Amanda Knox and Raffaele Sollecito used to kill Meredith Kercher is “not compatible" with the wounds on her body, a coroner testified today. Testifying for the defense, he said the neck wound was made with a knife with a 3-inch long blade, while prosecutors maintain a 6 1/2-inch knife found at Sollecito's home could be the murder weapon.

He also said there is no evidence that Kercher was assaulted by more than one person. On Friday, a police official testified that no break-in had been staged at the crime scene, casting doubt on another prosecution argument. Prosecutors say Knox and co-defendant Sollecito killed Kercher and then broke one of the apartment's windows from the inside to stage a burglary. A stone was found in one of the bedrooms, with shattered glass on the floor. (More Amanda Knox stories.)