"Amanda had a wound to her neck and I noticed it because it was known that Meredith had been killed by a wound to her neck," said Mezzetti. "She had a scratch to her neck."
"I was afraid that Amanda, too, might have been wounded, I was worried and I looked at it really intensely," Mezzetti said.
Mezzetti said she observed Knox's scratch from a few yards away. She described the wound as "vertical, less than 1-centimeter thick." She said it was red in color and gestured it was under her chin.
Mezzetti said she did not see any scratch when she saw Knox on Oct. 31, 2007, during breakfast at the apartment. She said she did not see Knox until two days later at the police station.
Mezzetti said the scratch was different from a love bite or hickey, as those would be "purple and more round."
Asked why she had failed to mention it when she had spoken to police previously, Mezzetti said she thought everybody else would have noticed it.