Crime / Amanda Knox Knox Pulled Knife on Him, Witness Says Homeless man puts suspect, boyfriend near murder scene By Harry Kimball, Newser Staff Posted Mar 28, 2009 3:02 PM CDT Copied US murder suspect Amanda Knox smiles at her lawyer Luciano Ghirga during a hearing in the Meredith Kercher murder trial, in Perugia, Italy, Friday, March 27, 2009. (AP Photo/Stefano Medici) A witness in the Amanda Knox murder trial testified that she waved a knife at him outside the house where Meredith Kercher was killed, the AP reports. The Albanian witness, at times mumbling and interrupted by the judge, said he “bumped into a big black trash bag” that turned out to be Knox and boyfriend Raffaele Sollecito. The witness said he “threw olives and a cell phone” at Knox when she brandished the knife. Knox’s attorney called the Albanian’s testimony “unreliable," but prosecutors said it was key. In other testimony at the Italian trial, a homeless man said he saw the couple together “chatting, at times animatedly,” on a basketball court near the scene of the crime on the night Kercher was killed. Knox claims she was at Sollecito's house at the time. (Read more Amanda Knox stories.)