A knife discovered during the demolition of O.J. Simpson's house that was recently turned over to police for testing has been ruled out as the murder weapon in the 1994 slaying of Nicole Brown Simpson and Ron Goldman.

The folding Buck knife was found in March.

Capt. Andy Neiman stressed that the authenticity of the story was not confirmed and that investigators were looking into whether "this whole story is possibly bogus from the get-go."

"It's unusual how this all of a sudden becomes a huge story during this time," Neiman added, referring to the popular "People v. O.J. Simpson: American Crime Story" anthology that is airing on the FX television channel.

Officer Norma Eisenman confirmed the knife was being tested for DNA evidence, according to KTLA.

A construction worker found the knife when Simpson's former Brentwood mansion was being demolished in 1998, according to TMZ, which initially reported the story. The worker gave the knife to an off-duty traffic officer, who was working security for a movie shoot.

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The officer who had the knife was retiring and asked a friend working in the robbery/homicide department about it, according to The Times. The detectives told superiors who launched the investigation into the knife's history.

"There were indications that two different knives may have been used," Carl Douglas, an attorney on Simpson's "dream team" legal defense told The Times. "One with a straight edge and one with a serrated edge."

Police never recovered the weapon used in the killings.

The Associated Press contributed to this report.