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LAPD discusses recovery of knife found on O.J. Simpson estate

LAS VEGAS - DECEMBER 5: OJ Simpson Simpson stands in the courtroom after being sentenced at the Clark County Regional Justice Center December 5, 2008 in Las Vegas, Nevada. Simpson and co-defendant Clarence "C.J." Stewart were sentenced on 12 charges, including felony kidnapping, armed robbery and conspiracy related to a 2007 confrontation with sports memorabilia dealers in a Las Vegas hotel. (Photo by Issac Brekken-Pool/Getty Images) *** Local Caption *** OJ Simpson

LAS VEGAS - DECEMBER 5: OJ Simpson Simpson stands in the courtroom after being sentenced at the Clark County Regional Justice Center December 5, 2008 in Las Vegas, Nevada. Simpson and co-defendant Clarence "C.J." Stewart were sentenced on 12 charges, including felony kidnapping, armed robbery and conspiracy related to a 2007 confrontation with sports memorabilia dealers in a Las Vegas hotel. (Photo by Issac Brekken-Pool/Getty Images) *** Local Caption *** OJ Simpson

The Los Angeles Police Department confirmed Friday that a knife that reportedly was found buried on the former estate of O.J. Simpson is under investigation.

.@LAPDHQ on knife found at O.J. Simpson's former home: We need to determine is this evidence. pic.twitter.com/Vd2UaTrizj

— Fox News (@FoxNews) March 4, 2016

.@LAPDHQ: We're not going to provide information on exact dates the knife was found. pic.twitter.com/7vFgGRI0Bd

— Fox News (@FoxNews) March 4, 2016

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TMZ first reported the discovery of the knife, which was actually found in 1998 or earlier during construction at the house formerly owned by Simpson.

.@LAPDHQ says they don't know where on the property the knife was found. pic.twitter.com/W1XE5b4qgg

— Fox News (@FoxNews) March 4, 2016

.@LAPDHQ says they don't know the identity of the person who originally found the knife. pic.twitter.com/edgp6683oo

— Fox News (@FoxNews) March 4, 2016

However, the knife wasn't delivered directly to police nearly two decades ago. Instead, TMZ reports that the man who found it gave it to an off-duty police officer who decided to keep it for himself -- until the past month or so.

Simpson was found not guilty of murdering his former wife, Nicole Brown-Simpson, and her friend Ronald Goldman during a much-publicized trial in 1995.