Los Angeles police are investigating and testing a knife that was allegedly recovered on property once owned by former football star OJ Simpson, a spokesman said on Friday.
The elite robbery-homicide division are testing the knife to determine whether it has any connection with the 1994 murders of Simpson's ex-wife Nicole Brown Simpson and her friend Ron Goldman, LAPD spokesman Andrew Neiman told a media conference.
The knife was turned over to an LAPD police officer several years ago by a construction worker at the Rockingham residence, he added.
"About - within the last month, LAPD became aware of an item that was allegedly recovered by a citizen at the Rockingham property, possibly during the demolition of the site," Neiman said.
"We need to vet that. We still don't know if that's an accurate account of how this item came into our possession."
Neiman refused to comment on what kind of knife was found, saying that its description "could be germane to determining whether or not this actual piece of evidence is, in fact, evidence or it's just a facsimile or made-up story."
Simpson endured one of the highest-profile trials in US legal history for allegedly murdering Brown and her friend on June 13, 1994.
Trial of the Century
Detained four days later after an infamous car chase that was watched live by television viewers across America, he eventually found not guilty after the so-called Trial of the Century the following year.
But a civil trial two years later found him responsible for the killings, ordering him to pay $33.5 million to the families of the victims.
Simpson was back in court in 2007 for an alleged armed robbery and kidnapping in Las Vegas. He was jailed for nine to 33 years, and remains behind bars.
Neiman confirmed that the double-murder is still an open case but added that under the "double-jeopardy" law, Simpson could not be tried again.
Police say they are not naming the officer who kept the knife but Neiman said he was "shocked"
"I would think that an LAPD officer, if this story is accurate, as we are being told, would know that any time... you come into contact with evidence, that you should and shall submit that to investigators," he said.
"So I don't know what the circumstances are, why that didn't happen, or if that's entirely accurate, or if this whole story is possible bogus from the get-go, involving a variety of people."
Simpson is the subject of the hit FX miniseries "People v. O.J. Simpson: American Crime Story," which looks at the trial from the lawyers' point of view.