Exclusives

NBA star Gilbert Arenas didn't have a license to possess the guns he stored in his locker in D.C.... law enforcement sources tell TMZ.

We're told there were four guns in Arenas' locker that were turned over to police, including a gold-plated Desert Eagle -- a gigantic handgun.

Arenas could be charged for "CPWL"-- carrying a pistol without a license.

As we previously reported, Arenas could also face assault charges stemming from the alleged gun-toting standoff with a teammate on Xmas Eve.

D.C. cops plan to bring in Washington Wizards coach Flip Saunders today for questioning. GM Ernie Grunfeld will be brought in later this week.

Jayson Williams fractured his neck in a car accident this morning ... law enforcement sources tell TMZ.

We're told Williams is in the prison ward in the emergency room at Bellevue Hospital Center in New York City.

A source connected with Williams tells TMZ prosecutors in his manslaughter retrial have been in touch with Williams' lawyers and they will move to revoke his bail.

Williams hit a tree while driving his SUV early this morning. He was arrested on suspicion of DWI.

UPDATE -- Williams was officially charged with drunken driving by cops ... at his hospital bed.

Casey Johnson fell into a diabetic coma twice and had to be hospitalized, law enforcement sources tell TMZ.

We're told Johnson had a history of diabetes and insulin syringes were found in her home after she died.

Johnson was taken at least once to Cedars-Sinai Medical Center in Los Angeles. We do not know specific dates of hospitalization, but we're told at least one incident occurred in the last year.

As we first reported, Johnson was found dead in her home yesterday.

Law enforcement tells us they believe she had been dead for several days.

No cause of death has been determined.

Steven Hirsch, head honcho of Vivid, tells TMZ a woman approached him two weeks ago, claiming she had a sex video of Tiger Woods. She said it was shot approximately two years ago.

Hirsch tells TMZ his people have seen 30 seconds of the video but is not confirming it's Tiger on tape -- he says he's still trying to ID the players.

Two things. First, Tiger's lawyers have already put out a threatening letter, stating they will go after anyone who tries to publish nude photos or videos of Tiger Woods.

Thing two. There is no way such a video could be legally released without Tiger's John Hancock. Good luck with that.

It's unclear how the accident happened, but cops say, miraculously, neither Tyrese nor the woman driving the SUV -- a mother of 5 -- were injured in the wreck.

Moments after the collision, Tyrese went straight to his Twitter page and posted, "Mother of five left without 1 scratch and we ended up hangin at the spa for a massage."

The big question -- who drove?

Former NBA star Jayson Williams was arrested on suspicion of DWI early this morning -- after his SUV struck a tree in Manhattan around 3:15 AM.

Williams, whose vehicle careened into a tree just off the 20th Street exit of FDR Drive, was in the passenger seat of his black Mercedes when cops arrived on scene -- but witnesses say he was driving and officers said no one else was in the car.

Jayson was taken to Bellevue Hospital with minor injuries.

You might remember Williams as the guy who accidentally killed his driver back in 2002 with a shotgun. The jury was deadlocked in 2004 on a reckless manslaughter charge and he is scheduled to be retried.

The "Entourage" star tells us he got banged up bad doing theater work back in the day -- so bad it left big scars on the back of his head.

Piven -- who was photographed in Hawaii -- tells us on December 17, he went under the knife for a "scar minimizing procedure." We never heard of it either, but supposedly it reduces the scarring. But Piven says he had no idea post-op scarring would be so prominent.

So what's Jeremy gonna do? He says he was thinking of shaving his head but can't because of continuity problems with "Entourage."

In the federal lawsuit, Angelyne calls herself "a world renowned celebrity" who is world famous "for her eye-catching and highly visible billboards and photographs..."

Angelyne says after the January 2009 release of "Notorious" -- a movie about Notorious B.I.G. -- several of her fans saw the flick and told her the famous billboard was shown in the movie for at least 12 seconds.

Unlike the highly-acclaimed movie "Volcano" (in which an Angelyne billboard crashes to the ground during a volcanic eruption) ... FOX Searchlight violated her copyright by not getting her permission before showing the billboard in the movie.

J-Boog from B2K -- aka Jarell Damonte Houston -- was arrested for domestic violence at his L.A. home on Sunday -- TMZ has learned.

Law enforcement sources tell us Boog was arrested late afternoon for "corporal punishment on a spouse" as well as for outstanding warrants relating to an allegedly bad driving record.

Neighbors tell TMZ they heard screaming in the house earlier in the day -- and when cops finally showed up, they rolled deep with 6 or 7 squad cars.

We're told police stayed for about an hour. No confirmation on who else was involved.

J-Boog -- who is unmarried -- is reportedly still dating his baby mama.

Casey Johnson, an heiress to the Johnson & Johnson fortune, has died .. TMZ has learned.

She died in L.A. We're told the body was discovered this morning.

She was 30 years old. Her father is Woody Johnson -- owner of the New York Jets.

Johnson was arrested in November for grand theft -- the alleged victim was a former girlfriend.

Johnson was reportedly engaged to Tila Tequila. We spoke with Tila a few minutes ago. She says they were fighting last week and that Casey stayed at Tila's house on the 28th. Tila tried contacting Casey on the 29th because Casey had left her dogs behind. Tila says Casey's phone has been shut off since the 29th and she was not able to make contact.

Johnson -- who tweeted frequently -- last tweeted on December 29 at 1:13 AM.

The cause of death is undetermined.

UPDATE: A law enforcement source tells TMZ it appears Johnson had been dead for several days before her body was discovered.

UPDATE: The LAPD has opened a death investigation.

Dr. Conrad Murray showed up to court today with $1,003 -- and left as a responsible father.

Murray was in court in Nevada so the judge could make sure he has been making his child support payments. Murray had paid his baby mama for November and December -- and made the January payment of $1,003 right there in court.

Both sides are due back in court in July.

Every Michael Jackson fan was overjoyed at the new song that leaked this weekend -- everyone except his record label, Lenny Kravitz and all of Michael's lawyers.

Sources tell TMZ the Jackson song, called "Another Day" and done with Lenny Kravitz, was never meant to see the light of day. We're told Sony, with the support of Jackson's estate lawyers, wants to have the song pulled off the Internet.

For his part, Lenny Kravitz posted a video saying he didn't leak the song and he has no idea how it got out there.

He says the song is not mixed and not a final version.

In papers filed in L.A. County Superior Court, Kennedy denies ever threatening to kill Williams or herself -- in fact, she says she was not a threat whatsoever.

So why, you ask, would Williams make such a claim? Kennedy says it's sour grapes because Williams is pissed because she's hired a lawyer to file a palimony suit against him.

Williams claims Kennedy pulled a knife on him and threatened suicide after losing a beauty contest. She denies it.

Today both parties were supposed to show for a hearing on the restraining order, but it appears a deal may have been struck because neither party showed and the case was dismissed.

The drama unfolded after an airport official checked out Joan's passport and became suspicious when he noticed it read "Joan Rosenberg AKA Joan Rivers."

Joan claims she tried explaining her late husband's name was Ed Rosenberg -- but the official found the whole thing fishy and gave away her seat on a flight back to Newark. Joan was pissed.

We're told police were called to the scene -- but Joan never got her seat back.

Rivers claims she was forced to put herself up in a hotel overnight to wait for another flight out this morning.

We're told the passport situation was eventually resolved and this morning Joan got on a plane -- but as you could imagine ... she ain't happy about it.

Our sources say Tiger was very clear on his plan -- go to a friend's estate in Africa and completely disappear from public view. One source believes Tiger left almost immediately.

Almost no one knows for sure, but wherever Tiger is, he's left nary a paw print.

Tiger Fun Fact: He proposed to Elin in South Africa in 2003.

A plan is in place to convene a grand jury to determine if NBA star Gilbert Arenas and teammate Javaris Crittenton will be charged with crimes for their alleged Xmas eve locker room gun-toting showdown ... law enforcement sources tell TMZ.

Arenas -- aka Agent Zero -- and Crittenton are being interviewed by D.C. detectives right now. Law enforcement tells TMZ after the interviews, the plan is to take the case before the D.C. grand jury. We're told the U.S. Attorney (which presents local cases to the grand jury in D.C.) will call the head coach for the Washington Wizards and someone on the security team at the Verizon Center as witnesses.

We're told, in addition to weapons charges, Arenas and Crittenton could be charged with criminal assault.

As for their interview with cops, a rep for the U.S. Attorney's office is present and the case could go to the grand jury as early as today.

Both players have said the incident was nothing more than a prank.