Los Angeles police said Friday investigators are examining a knife purportedly found years ago on the property w O.J. Simpson was living at the time his ex-wife Nicole Simpson and Ron Goldman were killed in 1994.

Simpson, 68, is serving nine to 33 years in a Nevada prison for a 2008 armed robbery conviction in a bizarre case in which he and a group of cohorts in Las Vegas recovered, at gunpoint, sports memorabilia Simpson said was stolen from him.

In the meantime, The People v. O.J. Simpson: American Crime Story, a 10-part drama on FX that premiered last month, is re-exploring the 1994 murder trial that sparked nationwide interest.

O.J. Simpson won parole in July 2013 on two kidnapping and two robbery convictions and one conviction for burglary with a firearm related to the 2007 case.

Simpson’s prison stint stems from a confrontation between Simpson and two sports memorabilia collectors at a Las Vegas hotel room in 2007.

A white Ford Bronco driven by Al Cowlings carrying O.J. Simpson, is trailed by Los Angeles police cars as it travels on a Southern California freeway in Los Angeles on June 17, 1994.

Even if the knife police are now investigating turns up evidence linking O.J. Simpson to the murders, double jeopardy would prevent him from being charged again for the killings.

OJ Simpson