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LOS ANGELES (AP) – Los Angeles police are investigating a knife purportedly found some time ago at the former home of O.J. Simpson, who was acquitted of murder charges in the 1994 stabbing deaths of his ex-wife Nicole Brown Simpson and her friend Ron Goldman.

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Police Capt. Andy Neiman confirmed the investigation Friday but released few details, stressing that the authenticity of the story is not known.

The weapon used in the killings has been a mystery for decades.

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The account of the knife’s discovery was first reported by TMZ, which said the knife was found by a construction worker during demolition of the home and given to a police officer who kept it.

In 1997, a jury found Simpson civilly liable for the slayings. He’s now imprisoned in Nevada on a robbery-kidnap conviction.

This is a developing story. Refresh for the latest updates.

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