Los Angeles Police Capt. Andy Neiman announced in March that a knife possibly linked to the murder of O.J. Simpson's ex-wife was undergoing forensic tests. Those tests have determined that it was not involved in the crime.
Sarah Paulson plays prosecutor Marcia Clark and Sterling K. Brown plays fellow prosecutor Christopher Darden in the FX series The People v. O.J. Simpson: American Crime Story.
O.J. Simpson, flanked by defense attorneys F. Lee Bailey (left) and Johnnie Cochran Jr., reacts as he is found not guilty on Oct. 3, 1995, of murdering his ex-wife Nicole Brown Simpson and her friend Ron Goldman.
Myung J. Chun/AP
O.J. Simpson stands at the end of a May 17 hearing in Clark County District Court in Las Vegas. A judge on Tuesday said Simpson is not entitled to a new trial on his 2008 convictions for armed robbery and kidnapping.