LAPD officials have reportedly concluded their investigation into the buried knife discovered at the former estate of O.J. Simpson. Citing sources close to the investigation, TMZ reports that DNA testing has produced "no matches." Microbes in the soil reportedly "degraded" any possible DNA, with no additional leads found via hair or other samples.

As previously reported, the so-called "buck knife" was allegedly discovered on the property "years ago" by a construction worker who turned it over to a retired LAPD officer who was working a nearby movie shoot. According to TMZ's original report, the officer stashed the knife at his own residence for several years before authorities were made aware of its existence.

The officer, later identified as George Maycott, disputes this claim. In a statement to KABC, Maycott said he was given the knife back in 2002 and attempted to turn it over to LAPD officials. However, Maycott argues, they simply weren’t interested. "The person on the phone placed Mascot on hold," Maycott’s attorney said. "[They] said she spoke to a supervisor who said the case was over and there was nothing they could do due to double jeopardy."

Though LAPD officials haven't publicly confirmed the buried knife's DNA test results, TMZ reports the investigation "is over."