Doug Stanglin, and Katharine Lackey

USA TODAY

Los Angeles police said Friday investigators are examining a knife purportedly found years ago on the property where O.J. Simpson was living at the time his ex-wife Nicole Simpson and Ron Goldman were killed in 1994.

Police testing knife purportedly found at O.J. Simpson estate

What has the former football star been up the past two decades since his October 1995 acquittal in the "trial of the century"?

Here's a look:

Current status

Simpson, 68, is serving nine to 33 years in a Nevada prison for a 2008 armed robbery conviction in a bizarre case in which he and a group of cohorts in Las Vegas recovered, at gunpoint, sports memorabilia Simpson said was stolen from him. Simpson could be released as early as 2017 if he seeks, and is granted, parole.

In the meantime, The People v. O.J. Simpson: American Crime Story, a 10-part drama on FX that premiered last month, is re-exploring the 1994 murder trial that sparked nationwide interest.

Review: The glove fits; O.J. trial series guilty of 'stunning' performances

2013

O.J. Simpson won parole in July 2013 on two kidnapping and two robbery convictions and one conviction for burglary with a firearm related to the 2007 case. He continued to be held for related convictions — four weapons-related sentences and two counts of assault with a deadly weapon — for which he was not yet eligible for parole.

"They were trying to steal other people's property," Simpson told parole commissioners. "They were trying to steal other people's money. My crime was trying to retrieve for my family my own property."

2007

Simpson's prison stint stems from a confrontation between Simpson and two sports memorabilia collectors at a Las Vegas hotel room in 2007. Simpson, a former superstar in the National Football League, said he was attempting to retrieve his own memorabilia.

Three co-defendants pleaded guilty and agreed to testify against Simpson, who was convicted and sentenced to 33 years in prison, with the possibility of parole in nine years.

1997

A decade before that robbery, a civil court jury found Simpson liable for the slayings of his 35-year-old ex-wife and Goldman, a 25-year-old waiter, and awarded $33.5 million in damages to families of the victims.

Could Simpson be charged again in murders?

Nicole Simpson and Goldman were found stabbed to death around midnight on June 13, 1994, outside her home, located close to the Simpson estate. Even if the knife police are now investigating turns up evidence linking O.J. Simpson to the murders, double jeopardy would prevent him from being charged again for the killings.