Knife found at OJ Simpson's house ruled out as murder weapon by US police

Forensic tests have eliminated the possibility that the knife, reportedly found at OJ Simpson's former estate, was used as a weapon in the 1994 murder case

Simpson is currently serving a sentence in Nevada for a hotel robbery in Las Vegas in 2007 (Getty Images)

A knife found at OJ Simpson's old house was not used to murder Nicole Brown Simpson and Ronald Goldman in 1994, the Los Angeles Police Department has confirmed.

Months of forensic tests have ruled out the small blade, which was reportedly found by a construction worker during the demolition of the retired American football player' estate in Brentwood, California.

“We don’t know if it’s a hoax, but there’s no nexus to the murders, based on the testing we’ve done,” Andrew Neiman of the Los Angeles Police Department said.

The knife was in the possession of a retired Los Angeles police officer for years, until it was brought to police attention last month.

OJ Simpson's wife and her friend were stabbed to death on 12 June 1994, outside her home, not far from the Brentwood estate. Simpson was acquitted of the murder in a high-profile case, which was broadcast live on US television.

The murder weapon has never been found, despite the police examining several knives over the years.

Simpson, who has always maintained that he is innocent of the murder, is currently serving a sentence in Nevada for a hotel robbery in Las Vegas in 2007. He could be in jail for nine to 33 years, but is eligible for parole next year.

The investigation remains open.