O.J. Simpson is once again seeking his release from a Nevada prison.

Simpson's attorneys filed final briefs with the Nevada Supreme Court to overturn his 2008 conviction for armed robbery and kidnapping. The convictions were related to a Las Vegas hotel room incident where he said he was taking back personal items stolen from him.

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Clark County prosecutors submitted papers to the appeals tribunal last month saying Simpson should remain incarcerated. Prosecutors said another trial wasn't appropriate.

It's up to the Supreme Court whether to hear verbal arguments. Justices could issue a ruling based solely on submitted filings. The court receives 2,400 cases annually and schedules oral arguments for less than 100 of those.

A decision by justices wasn't expected anytime soon. Now serving a sentence of nine to 33 years in prison, Simpson becomes eligible for parole in 2017.

New filings in Simpson's latest legal battle repeated an older theme. His attorneys, Tom Pitaro and Ozzie Fumo, said his trial attorney in the robbery/kidnapping trial, Yale Galanter, blew the case due to conflict of interest. Attorneys said Galanter also botched a state Supreme Court appeal in 2010.

The 67-year-old Simpson remains in a northern Nevada prison following his conviction of felony charges related to the September 2007 hotel room altercation with two sports collectable dealers. Armed, and leading a group of men, some of whom said they brought guns at the former football star's urging, Simpson confronted the collectable dealers.

Simpson didn't testify at the 2008 trial. Publicly, he said he was trying to get back personal items taken from him following his 1995 acquittal in the stabbing deaths of Nicole Brown Simpson and Ronald Goldman.

Simpson first tried to gain early release from prison in a May 2013 hearing before Clark County District Judge Linda Marie Bell during which he said Galanter had blown his defense by not bringing up the argument that he didn't know his colleagues in the hotel room raid had guns.

TagsO.J. Simpson, trial, courts, Nevada, nicole brown simpson, ronald goldman, justice, Las Vegas, sports memorobilia