CCTV footage published by an Italian broadcaster may challenge Amanda Knox's alibi from the night when her roommate Meredith Kercher was murdered.
Investigative program Quarto Grado said that the black and white video footage was taken from a nearby security camera on November 1, 2007--the night of the murder.
The video appears to show a woman wearing jeans and a long coat in the car park outside the students' house.
The Italian program says that Knox appeared in similar apparel in the days after the death and that the woman, who appears on the video two minutes after Kercher, walks similarly to Knox.
Knox's alibi for the case has been staying with her then-boyfriend Raffaelle Sollecito.
Latza Nadeau told The Times that the CCTV footage doesn't help Knox's defense case if it is proven to be here but won't necessarily help the prosecution either, reported the Independent.
“If the prosecution shows someone like Amanda Knox walking away from the crime scene it's not helpful. For the defence, if there is a video of her anywhere near the house it's not helpful to them because her alibi is that she was at Raffaele's house.”
Knox and Sollecito and a third man have been convicted by Italian courts in the murder, though they have repeatedly emphasized their alleged innocence.
In the last legal update the country's highest court upheld the original conviction after a middle court had overturned it.
Knox and Sollecito have skewered the country's legal system and vowed to appeal. Knox is currently living in the United States.