LAS VEGAS: A profanity-filled audio recording, apparently of O. J. Simpson and others during the incident last week that led to his arrest, surfaced online today.

In the 38-second recording, the voice of a man identified as Mr. Simpson by TMZ.com, the Web site where it is posted, is heard repeatedly telling others not to let anyone out of the room and accusing those present of stealing his property and trying to sell it.

Mr. Simpson is being held without bail on six felony charges stemming from the incident; a bail hearing is now scheduled for early Wednesday morning in Clark County Justice Court before Judge Ann Zimmerman. The judge may conduct the hearing in person or by videoconference.

Two sports memorabilia collectors and dealers have told the police that Mr. Simpson and five other men stormed into their hotel room at the Palace Station Hotel and Casino, about a mile from the Las Vegas Strip, on Thursday evening and robbed them at gunpoint.

Mr. Simpson's account is that he went to the room to take back property that had been stolen from him, and that there were no guns involved.

Mr. Simpson, 60, was arrested on Sunday and was booked into the Clark County Detention Center. One of the men accused of joining him, Walter Alexander, 46, of Mesa, Ariz., was arrested on Saturday and released Sunday on his own recognizance, according to his lawyer, Robert Rentzer. Four others are still being sought by police.

Mr. Simpson and Mr. Alexander are each charged with six felonies in connection with the incident, according to Lt. Clint Nichols of the Las Vegas police: two counts of robbery with a deadly weapon, two counts of assault with a deadly weapon, one of conspiracy to commit burglary and one of burglary with a firearm.

It remains unclear exactly what property was taken in the incident, or to whom it belonged.

"Having said that, the manner in which these properties were taken, we have a responsibility to look into that regardless of who the property belongs to," Lieutenant Nichols said. "We also have some information that the property that Mr. Simpson allegedly took was not his property.

"It included a lot of sports memorabilia and most of it and had been signed by Mr. Simpson himself along with some other property," Lieutenant Nichols said. "I believe there were some Joe Montana cleats, some signed baseballs and some other stuff."

Capt. James Dillon of the Las Vegas police said that investigators confiscated two guns that may have been used in the Thursday incident in an early morning raid on two residences in Las Vegas on Sunday.

Mr. Simpson told The Associated Press in an interview that he was innocent and that there were no guns involved in the incident, which he called a sting operation he organized.

Mr. Alexander's lawyer, Mr. Rentzer, told reporters: "I assured the authorities that we are not hiding and that he will be available to us. Until I can meet with my client and hear the facts of the case and determine my client's exposure, I refuse to discuss the prospects of plea bargaining."

The two collectors and memorabilia dealers who accused Mr. Simpson and the other men are Alfred Beardsley of Glendale, Calif., and Bruce L. Fromong of North Las Vegas, Nev. They told the police on Thursday night that a group of men, including two with guns, entered Mr. Beardsley's room at the Palace Station around 8 p.m. and left with items including photographs and books signed by Mr. Simpson, lithographs of the former San Francisco 49ers quarterback Joe Montana, and Mr. Beardsley's cellphone.

Mr. Beardsley and Mr. Fromong told the police that the group had been directed by Mr. Simpson.

In his interview with The A.P., Mr. Simpson gave a different account. He said that he and some acquaintances left a cocktail party and went to Mr. Beardsley's room, accompanied by Thomas Riccio, another dealer and auctioneer of sports memorabilia. He said Mr. Riccio had alerted him several weeks ago that Mr. Beardsley and Mr. Fromong were offering to sell items of his, and that Mr. Riccio had set up a meeting with the two men, supposedly on behalf of an interested buyer.

TMZ.Com, the web site that posted the audio recording today, said it was made by Mr. Riccio. It did not say how it obtained the recording. It described Mr. Beardsley as the object of Mr. Simpson's evident ire.

In a brief interview today Mr. Riccio said TMC paid him for the recording, but he declined to divulge the price.

Whether the Riccio audio will be of use to prosecutors is an open question. Mr. Riccio withheld it from the police for three days before he sold it to TMZ.Com, a decision that may taint it, Lieutenant Nichols said.

"He did not turn that over to us immediately, so that evidentiary value may have been damaged," Lieutenant Nichols said. "What could've been the proverbial nail in the coffin is now floating around on TMZ.com instead. I don't think we can just download that and bring it into court, but that's for the D.A. to decide."

The police said today that they had received calls from two other suspects, Michael F. McClinton, 49, and Clarence J. Stewart Jr., 54, both of Las Vegas, and hoped to bring them into custody as early as tonight.

Hotel surveillance video and stills are being very useful in the case, Lieutenant Nichols said. Mr. McClinton, Mr. Alexander and Mr. Stewart all have been seen in video with Mr. Simpson at the Palace Station on the night of the robbery, he said.

Police have cleared another man named earlier as a suspect, Tom Scotto of New York City. Mr. Scotto was questioned and proved to police he was elsewhere on Thursday night, Lieutenant Nichols said. Two other men believed to have entered the hotel room with Mr. Simpson have been tentatively identified, the officer said.

Lieutenant Nichols said that Mr. Alexander was helpful in the probe on Sunday when his attorney, Robert Rentzer of Los Angeles, allowed him to be questioned on the condition that nothing Mr. Alexander said could be used against him.

Lieutenant Nichols also cast doubt on Mr. Simpson's claim that he rounded up a group of new acquaintances to go to the room to retrieve the sports items. Rather, the officer said, it appears Mr. Simpson had prior social relationships with all of the men involved.

"This was not a grab-five-people-in-the-lobby-and-come-with-me type of thing," Lieutenant Nichols said.

Mr. Simpson told The A.P. that he pretended to be interested in buying the suit that he wore in court in 1995, when he was acquitted of the murders of his former wife, Nicole Brown Simpson, and her friend Ronald Goldman. The group left the room with Mr. Simpson's Hall of Fame certificate and a photo of J. Edgar Hoover, the former F.B.I. director, among other items, Mr. Simpson said.

"Everybody knows this is stolen stuff," Mr. Simpson was quoted as saying. "Not only wasn't there a break-in, but Riccio came to the lobby and escorted us up to the room.

"In any event," Mr. Simpson was quoted as saying, "it's stolen stuff that's mine. Nobody was roughed up."

Mr. Simpson was acquitted for the 1994 double murder, but he was found liable for the deaths in a civil case in 1997 and was ordered to pay the Goldman family $38 million and Ms. Simpson's family $24 million. To date, he has paid about $10,000 of the judgment, said a lawyer for the Goldman family, David J. Cook.

The Goldman family watched the case from afar with "cautious optimism," said Mr. Goldman's father, Fred Goldman.

"He deserves whatever he gets," Mr. Goldman said. "It's only satisfying that he's arrested. If he's convicted and sentenced to jail, it'll be that much more satisfying. But when all is said and done, he has still gotten away with murder and that's where he should've been punished, that's where he should have been found guilty and that's where he should've gotten the death sentence."

The incident leading to the arrests came the night before the release of "If I Did It," a book Mr. Simpson collaborated on with a ghostwriter that he said was a fictional account of how he might have committed the murders for which he was acquitted. The book, originally to be published by HarperCollins last year before an outcry prompted the company to cancel it, was repackaged by the family of Mr. Goldman to make money to pay down the civil judgment.

The Goldman family has been under criticism by members of Ms. Simpson's family for publishing the gory account. Ms. Simpson's sister, Denise Brown, appeared on Oprah Winfrey's talk show on Thursday to denounce it, and Ms. Winfrey agreed that its publication was distasteful.

Yet Mr. Goldman said the robbery arrest was another reason why he wanted the book published.

More O.J. Pieces by Steve Friess