American student Amanda Knox received good news Wednesday when DNA test done on a murder weapon showed no trace of Knox's British roommate's DNA.

An expert witness revealed to the court that forensic evidence showed Amanda Knox's DNA on the blade's handle confirming tests from previous trials. But the witness indicated that the knife did not show any trace of Meredith Kercher's DNA.

The DNA evidence on the alleged murder weapon found in Sollecito's apartment was a hotly contested evidence during the first trial and it is still one of the most controversial pieces of evidence in the Amanda Knox case, experts say.

Prosecutors believe that the kitchen knife is the weapon used in the murder because it reportedly matched the wounds found on Kercher's body.

Evidence was presented during the first trial supporting this claim since DNA of the slain British student was found on the blade. The Italian court however ordered a review of the test discrediting the evidence shown by the prosecution.

Amanda Knox's co-defendant Raffaele Sollecito's defense lawyer Luca Maori told the press that the trace of DNA indicates that the knife was not washed. According to ABC News, Maori said, "It is something very important. It is absurd to use it for a murder and put it back in the drawer."

Prosecutors declined to comment about the DNA test results.

Sollecito on the other hand had an emotionally-charged address on Wednesday saying that Amanda Knox was his "first real love." He added that he did not take the murder accusations seriously because he was in the beginning of his relationship with Knox making it impossible for him to realise how severe the accusations were.

While addressing the court, Rafaelle Sollecito said, "Me and Amanda were living the dawn of a carefree romance, and we wanted to be completely isolated in our love nest." Sollecito added that the love affair was "a little fairy tale."

Amanda Knox did not respond to queries about the new development in the case. According to Amanda Knox's and the Knox family's spokesperson David Marriott, Knox is busy with school and doubts that the American student would like to share her thoughts on the matter.

Amanda Knox and her former boyfriend Sollecito are expecting a verdict in January 2014.