A 21-year-old woman suffered a painful, agonizingly slow death after being sexually assaulted, the Times of London is reporting.

The flick knife blade allegedly used to kill her after "extreme sexual experiences," missed the carotid artery, according to a report by Italian Judge Claudia Matteini.

Click here to read the judge's report.

Click here to read a report in the Times of London.

Meredith Kercher was found dead Nov. 2 in the Perugia apartment she shared with American exchange student Amanda Marie Knox, 20, of Seattle.

Kercher's body was found in the apartment, where police said she died fighting off a sexual attack. The coroner said she was stabbed in the neck.

An Italian judge Friday ordered Knox, her boyfriend, Raffaele Sollecito, 24, and Diya "Patrick" Lumumba, 38, to remain in jail as suspects in her death.

Police Saturday identified a fourth suspect, after a bloody fingerprint found in the house didn't match any of the current suspects, the Daily Mail is reporting.

The new suspect, who police are trying to identify using security footage, is believed to be a male musician from North Africa, according to the Daily Mail.

Click here to read a report in the Daily Mail.

The judge said two of the suspects, Sollecito and Knox, allegedly spent the day of the attack smoking marijuana, Sky News reports.

Knox let Sollecito and Lumumba into their apartment, but, "then something went wrong, the two men demanded some kind of sexual act, which (Miss Kercher) refused to do," according Sky News.

Click here to read a report from Sky News.

Italian police on Friday were investigating whether a text message predicting the Leeds University undergraduate's murder was sent by one of the three people suspects.

The text message said, "For me, tomorrow or tonight Meredith dies," and was sent to a man who thought he received it in error, according to the Daily Mail.

Associated Press material was used in this report.