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Dog the Bounty Hunter's stepson Gregory Zecca has been placed on a psychiatric hold as he grieves the death of his son, who was killed in an accidental shooting at the Zecca residence.

A rep for the family tells TMZ ... Greg has been put on a 5150 psychiatric hold because he is so devastated by the loss of his only son, Anthony ... and we're told there were concerns Gregory might try and take his own life.

The rep tells us the hold is because Greg is stricken by grief and not because he feels guilty of a crime in relation to the shooting.

3:40 PM PT -- TMZ has just learned there was a second individual who was injured during the incident. The Costa Rican Red Cross tells TMZ ... the second individual was rushed to a local clinic in critical condition. Their current condition is unknown.

3:10 PM PT -- Judicial Investigation Agency tells TMZ ... Malcolm was rescued by bystanders and taken to the shore where he received aid from the Costa Rican Red Cross. He was declared dead at the scene. The body was sent to the Judicial Morgue in San Joaquín de Flores, Heredia for an autopsy.

10:53 AM PT -- Warner died of asphyxia after he was caught by a high current in the ocean, according to ABC News. His body was reportedly found Sunday afternoon.

"The Cosby Show" alum Malcolm-Jamal Warner has died in Costa Rica at the age of 54, TMZ has learned.

TMZ has a reliable source who says Warner died as a result of an accidental drowning while he was vacationing with his daughter.

As you know, Malcolm‑Jamal Warner straight‑up owned the '80s as Theodore Huxtable on "The Cosby Show," snagging an Emmy nod and locking in his spot in TV royalty.

Three 6 Mafia star Project Pat's son was killed in January and law enforcement now believes they've nabbed the people responsible.

Law enforcement sources working the case in Memphis tell TMZ Hip Hop that U.S. Marshals recently took a 19-year-old woman named Talia Jones into custody in Minnesota for her alleged role in the killing of Patrick Houston, Jr. ...  which they believe may have been the result of a targeted robbery that turned fatal.

Jones remains in custody and is expected to be extradited to Memphis to face charges. Houston Jr. was only 21 at the time of his death.

Treach has been a hip hop star longer than a lot of today's acts have been alive and he's warning them all not to become a statistic like his homie Tupac Shakur -- and cover all their bases!!!

TMZ Hip Hop caught up with the Naughty By Nature legend in NYC last week and he was pumped the dispensary he co-owns with Ice-T out of their New Jersey stomping grounds is up and running.

The weed biz in Dirty Jerz is volatile right now ... Raekwon and several others just shut down their sativa shops, but Treach says "The Medicine Woman" has all the juice anyone in the new jack city could ever want!!!

Treach is also coming off a successful nationwide tour on "Jason's Lyric" playwright ... where he co-starred and rapped, reprising his role as "Alonzo" from the film.

We asked him what it'll take for today's new rappers to unlock the road to entrepreneurship as he did and Treach bluntly tells them to avoid the groupie love!!!

Treach claims his 1999 marriage to Sandra "Pepa" Denton from Salt-N-Pepa was a direct result of seeing Tupac get convicted of sexual misconduct, resulting in him serving 9 months in prison ... a saga in which Treach sounds like he's still not convinced the truth was revealed.

Malcolm‑Jamal Warner was looking forward to some R & R in Costa Rica just one week before his tragic passing at 54, and his arrival there was captured in what could be the final public pic of him.

The actor was photographed at the airport in CR, looking relaxed and low‑key on July 13. He had just arrived on a flight from Atlanta ... exactly one week before his tragic death by drowning.

TMZ broke the story ... Malcolm-Jamal's body was found Sunday after he got caught in an ocean current, resulting in his accidental drowning.

Alan Dershowitz is calling on the feds to cut a deal with Ghislaine Maxwell and release her from prison ... in exchange for spilling secrets on the dealings of Jeffrey Epstein.

The famed defense attorney joined us on "TMZ Live" Monday and we asked him about his crusade to get Ghislaine sprung from a federal penitentiary.

Ghislaine was Epstein's one-time girlfriend and co-conspirator and she's doing hard time after being convicted of aiding Epstein in the sexual exploitation and abuse of multiple minors over the course of a decade.

Can you imagine a world where Kurt Angle never joined WWE?? Well, the Hall of Famer tells TMZ Sports if a league like Hulk Hogan's Real American Freestyle existed back in his day ... his life might have looked drastically different!!

We caught up with the American Hero ahead of the organization's debut next month in Cleveland ... and he couldn't be more excited to join in on the fun as an analyst.

"There have been other people who have tried professional wrestling leagues before with Olympic-style wrestling, freestyle wrestling, it didn't work out," Angle said.

Dog the Bounty Hunter's step-grandson's fatal gunshot wound was in his neck ... TMZ has learned.

We obtained the police report from the Collier County Sheriff's Office in Florida and deputies say 13-year-old Anthony Zecca had an entry wound on his neck, just above his sternum, and no exit wound.

Law enforcement says Anthony had lost a ton of blood by the time they arrived at the Naples apartment where he was shot ... and the teenager received CPR and other life-saving measures, including chest compressions.

Frank Grillo’s thinking about his legacy -- telling TMZ what he still wants to do before his time’s up. And here's the kicker ... he made those haunting remarks just before boarding a Delta flight that literally had its engines catch fire seconds after takeoff!

We bumped into Frank at LAX Friday, and he got real about hitting major milestones at 60. One of his big life goals? Making sure his kids are set for life before he checks out. Yep, for real ... talk about timing!

He dropped that heavy statement just before he and the 226 passengers, plus 9 crew members on Delta Flight 446, had a major scare when the plane's engines lit up in flames.

Dog the Bounty Hunter's late step-grandson snapped photos with his father at a gun range years before his pops shot and killed him ... and the chilling images are surfacing online.

Check out these pics of Gregory Zecca -- son of Dog's wife, Francie -- and his son Anthony ... they are at a shooting range, squeezing off rounds from rifles.

We broke the story ... the family says Gregory accidentally shot his 13-year-old son Saturday night at their apartment in Naples, Florida. Anthony died, police are investigating and no arrests have been made.

Dog the Bounty Hunter's family is going through a personal tragedy ... because his stepson shot and killed his step-grandson in what we're told was an accidental shooting.

Sources with direct knowledge tell TMZ ... Gregory Zecca -- son of Dog's wife, Francie -- shot his 13-year-old son Anthony in a freak accident at their apartment in Naples, Florida Saturday night.

Law enforcement confirms to us they responded to a call about a shooting around 8 PM ET. They haven't made any arrests and call this an "isolated incident." The investigation is ongoing.

Those hoping for fun moments from Travis Kelce and Bad Bunny in "Happy Gilmore 2" are in luck ... Julie Bowen tells TMZ Sports the guys are great in the flick!!

Bowen -- who's reprising her role as Adam Sandler's love interest in the iconic golf movie's sequel -- said out in NYC this week Kelce and Bad Bunny's acting chops are outstanding.

When it came to the Kansas City Chiefs tight end, Bowen told us, "He's a star. He's always been a star. He continues to be a star."

Jon Jones is confident he'll be fighting at Donald Trump's White House UFC event whenever it goes down ... telling TMZ Sports on Thursday he's got "a very strong feeling" he'll be on the historic card.

Of course, the shindig doesn't have an official date or a time yet -- but Dana White said this week he's going to meet with Trump soon to hammer out the logistics ... and whenever it all gets set, Jones made it clear he wants in.

"That's the goal," the former heavyweight champ said out at LAX.

Denise Richards' estranged husband is revealing what ignited their explosive July 4 fight, and subsequent divorce -- he claims he caught her cheating, and has text messages to back that up.

In an exclusive interview, Aaron Phypers tells TMZ ... he first learned of Denise's alleged hookup with another man at the beginning of the year, when he found text messages between them on Denise's laptop.

Phypers claims the texts include several selfies shared between Denise and the other man, and sweet messages like her wishing him "sweet dreams."

Astronomer CEO Andy Byron and HR Chief Kristin Cabot were all over each other even when they weren't on the kiss-cam ... 'cause we got them locking lips before they got busted.

Check out the video ... shot from behind their seats. You see the massive stadium and the crowd holding up lighted phones as Chris Martin belts out Coldplay's hit, "Yellow."

The pair is silhouetted by the brightly-lit stage ... as they sway to the music. At times, they had their arms around each other, and you see Andy going in for a kiss.

Wendy Williams rang in her 61st birthday Friday, and she was all smiles as she celebrated with friends in the Big Apple!

Check out her exuberant grin ... the TV host and personality looked thrilled to be with her loved ones as she stepped into New York City's Tucci restaurant for dinner. And, in a video of her heading to her gathering ... she confirmed her birthday was going just fabulously.

She got all dolled up for the special occasion, opting for a super short animal print dress that showed off her cleavage. She paired the dress with white sneakers and an oversized black handbag. She finished off her look with large shades and her signature pinky-purple lipstick.