The decision may have limited impact because the federal government and 47 states already have laws that allow convicts some access to genetic evidence. Testing has led to the exoneration of at least 232 people who had been found guilty of murder, rape and other violent crimes.

The court ruled 5-4, with its conservative justices in the majority, against an Alaska man who was convicted in a brutal attack on a prostitute 16 years ago.

William Osborne won a federal appeals court ruling granting him access to a blue condom that was used during the attack. Osborne argued that testing its contents would firmly establish his innocence or guilt.

In parole proceedings, however, Osborne has admitted his guilt in a separate bid for release from prison.

The high court reversed the ruling by the 9th U.S. Circuit Court of Appeals in San Francisco. States already are dealing with the challenges and opportunities presented by advances in genetic testing, Chief Justice John Roberts said in his majority opinion.

Last month, the 3rd U.S. Circuit Court of Appeals in Philadelphia overturned his 1988 convictions and double life sentence in the murders of a Florida couple in 1983 in what prosecutors described as a drug deal gone bad. The court wrote that the evidence presented at trial was not sufficient to warrant a verdict of guilty beyond a reasonable doubt.

Such reversals, in which no new evidence is presented, are considered extremely rare.

Kamienski, 61, was released from South Woods State Prison on Tuesday afternoon. Standing across the street from the prison, he spoke softly and fought to hold back his emotions. He expressed thanks for the friends who stood by him during the lengthy appeal process and said he would take time to let it all sink in.

"It's hard to put into words how I feel," the lanky Kamienski said. "I'm just going to try and get my life back together, do some thinking, do some unwinding."

Prosecutors contended Kamienski helped two friends dispose of the bodies of Barbara and Henry DeTournay after one of the friends, Joseph Marzeno, shot the couple during a 1983 robbery involving $150,000 worth of cocaine. Their bodies were dumped in New Jersey's Barnegat Bay and discovered several days later.

Marzeno, Kamienski and a third man were convicted of the murders, but the trial judge later threw out Kamienski's conviction for a lack of evidence. A state appeals court reinstated the conviction, however, and New Jersey's Supreme Court declined to hear the case.

Enter Timothy McInnis, a lawyer who heard about Kamienski's case at a holiday party in New York in the late 1990s and decided to take it on.

The ruling came after a contentious hearing that ultimately spilled into a courthouse hallway, where the former manager, Mike Gilbert, and a lawyer for Fred Goldman exchanged heated accusations.

Goldman — the father of Ronald Goldman, who was slain alongside Simpson's ex-wife 15 years ago — is seeking to satisfy a $33.5 million civil judgment against Simpson by selling the suit the Hall of Famer wore to court when he was acquitted on murder charges.

Gilbert said Simpson gave him the suit the day after his Oct. 3, 1995, acquittal. He claims it is his property because Simpson had not yet been found civilly liable for Ronald Goldman's and Nicole Brown Simpson's deaths.

Gilbert told Fred Goldman's lawyer, David Cook, that Goldman previously said his pursuit of Simpson was not about money.

The justices, in an order Monday, say they will hear arguments next year in a case involving eight Shell station operators in Massachusetts who are fighting changes in lease terms that they say were intended to convert stations run by franchisees to company-owned facilities.

A federal jury awarded the gas station operators $3.3 million. The Boston-based 1st U.S. Circuit Court of Appeals upheld some aspects of the verdict and overturned others.

Shell, owned by Royal Dutch Shell PLC, and the station operators all appealed to the Supreme Court. The Obama administration also asked the court to intervene and rule in Shell's favor.

The case turns on provisions of the 30-year-old Petroleum Marketing Practices Act. Appeals courts around the country are divided on the issue.

The cases are Mac's Shell Service v. Shell Oil, 08-240, and Shell Oil v. Mac's Shell Service, 08-372.

A long-running legal battle between American International Group Inc. and an investment firm led by its former chief executive, Maurice R. "Hank" Greenberg, is due in federal court Monday. Control of more than $4.3 billion is at stake.

At issue are tens of millions of shares Starr International Co. holds in the giant insurer, as well as tens of millions of shares Starr sold in recent years.

Were the insurance giant to prevail, AIG said Thursday that it intends to use any cash it wins to help pay back the debt it owes the federal government, which rescued it from the brink of bankruptcy in September. Any winnings that it gets in stock, currently worth a far smaller amount than the cash Starr has generated from selling other stock, will be used toward employee long-term compensation.

Mr. Greenberg is expected to testify in the trial, before a jury in federal district court in lower Manhattan. Both sides have retained name-brand counsel, David Boies for Starr, and Theodore Wells for AIG. The case could still settle.

For decades when Mr. Greenberg was at AIG's helm, the shares were used to fund a long-term compensation plan for AIG employees. But after he left in 2005, amid an investigation of AIG's accounting, the program ended and Starr, which is privately held, has been using the funds for other purposes, including investments. AIG says it should control the shares.

Prosecutors said Tuesday that 49-year-old Robert Powell of Hazleton falsified records to hide the true income of former Luzerne County judges Mark Ciavarella and Michael Conahan. They said Powell also transferred tens of thousands of dollars in cash to Conahan to avoid federal income taxes.

The former judges have pleaded guilty to accepting payoffs in exchange for placing juveniles in detention facilities operated by companies that Powell co-owned. Their sentencings are pending.

Powell's lawyer said Powell realized he made a mistake. He faces a maximum sentence of more than five years.