RIP

John Stamos is mourning the loss of a dear friend ... announcing the heartbreaking news on social media Monday.

The "Full House" alum posted a poignant tribute to his pal, Mike Owen, who he said he's been friends with since he was just 11 years old.

Stamos said he learned of Mike's passing in a text from his friend's brother ... sharing he was on a flight to Detroit when he received the news.

Prince's sister Tyka Nelson suffered congestive heart failure when she died ... but authorities say her heart was also weakened by substance abuse.

The Minnesota Dept. of Health issued Tyka's death certificate, which lists cardiac arrest as the primary cause of death, and congestive heart failure as the secondary cause.

According to her death certificate, the 64-year-old singer and songwriter suffered cardiac arrest about 45 minutes before she was pronounced dead. She'd also battled non-ischemic cardiomyopathy -- a general term for abnormal heart function -- for more than 4 months.

Paul Teal, famous for his work on "One Tree Hill," died 7 months after being diagnosed with stage 4 cancer ... TMZ has learned.

The actor's fiancée, Emilia Torello, tells TMZ ... Paul was diagnosed back in April with stage 4 neuroendocrine pancreatic cancer.

Paul died Friday in a hospital in Raleigh, NC, and Emilia tells us ... "He was the most talented man I’ve ever met. When he set his mind to something, there was no stopping him. He was the most diligent and dedicated person. I truly believed with all of my heart that he would come out the other side of this because of those traits. That’s what makes this loss even more tragic."

Renowned Russian ballet star Vladimir Shklyarov is dead after falling from the 5th-floor balcony of a building Saturday in St. Petersburg, Russia.

The Mariinsky Theatre -- where Vladimir Shklyarov was the highest-ranking dancer -- confirmed the 39-year-old's death ... calling it a huge loss for the entire institution.

Russian state media outlet RIA Novosti reports authorities have launched an investigation into Shklyarov's death in St. Petersburg ... but according to the preliminary ruling, the fall was an accident.

Queen Camilla is mourning the loss of a longtime companion ... her beloved dog Beth has died.

Buckingham Palace confirmed the sad news on Monday on X ... sharing the rescue pup, a Jack Russell Terrier, had passed away.

Alongside several photos of the Queen Consort and Beth, the royal family's official X account announced the "sad farewell."

Mike Newman -- the star of “Baywatch” who passed away last month after a long battle with Parkinson’s disease -- received a touching send-off from those close to him ... a paddle out held in his honor.

Matthew Felker -- the director behind the Hulu docuseries “After Baywatch: Moment in the Sun” -- helped make the event happen ... and, check out the photo. It’s a fitting tribute to someone who spent so long acting near the water.

We’re told Newman’s costar David Chokachi -- the actor who played Cody Madison in more than 80 episodes of the show during the later ‘90s -- also came to pay his respects to Mike.

Dolly Parton's brother, David, has died ... this according to their sister -- who paid tribute to him on social media.

Stella Parton announced the sad news via X Friday ... saying her wonderful brother had passed away -- adding it's never easy to lose a loved one, but she knows David is now at peace.

The Farrar Funeral Home in White Pine, Tennessee posted his obituary to their website ... confirming he passed away peacefully at home. No cause of death was included.

Malcolm X's family is going after the federal government in a new lawsuit ... alleging the feds played a key role in the civil rights leader's 1965 assassination.

Three of Malcolm X's daughters filed the suit Friday on their own behalf and on behalf of his estate, claiming the CIA, FBI, DOJ and NYPD all participated in a wide-ranging conspiracy behind their father's shooting death.

In the docs, obtained by TMZ, the family claims these agencies also engaged in a decades-long coverup after Malcolm was gunned down on February 21, 1965 at the Audubon Ballroom in Manhattan.

Jim Carrey's older sister Rita has died ... this according to her husband of 16 years, Alex.

Rita's husband posted the update on Facebook Friday morning, where he shared the radio personality passed away "peacefully and quietly" on Thursday.

As he continued, Rita's husband remembered her as his "bestest friend," "lover" and "beautiful wife."

Diddy and Kim Porter's twin daughters are sharing an emotional tribute on the anniversary of their late mother's death ... and they still can't believe she's gone.

D'Lila and Jessie honored Kim with a social media post Friday, saying ... "We can't believe it’s been 6years without you. We think about you every single second of the day. We love and miss you so much words can’t even explain."

Diddy's family is obviously going through a lot as he sits in jail in New York awaiting his criminal trial, and the twins say they wish Kim was here with them, but know her "spirit will be around forever!!"

Liam Payne sought out the hotel employee accused of delivering him drugs very shortly before his death ... and their interaction is captured in this newly discovered surveillance footage.

TMZ exclusively obtained the video showing Liam briefly stepping out of an elevator in the basement of the CasaSur Palermo Hotel in Buenos Aires... chatting with one of the 3 people charged in connection with his death.

Our sources at the hotel tell us the staffer who shakes hands and chats with Liam in the video is Ezequiel David Pereyra ... a bellboy at the hotel who police say delivered drugs to Liam in a soap box. While police have not yet confirmed it's Pereyra in this video, we know they have the footage.

Piff the Magic Dragon is confirming he actually spent almost $60K to clone his late dog, Mr. Piffles ... telling TMZ he's "so glad" he did.

We caught up with the magician after the sad news his longtime performing companion and beloved Chihuahua had died ... with the "America's Got Talent" alum revealing he created a contingency plan for this inevitable day back when his pup first started getting older.

Though word of Piff's decision to clone the pup broke a while back, the British comedian assured us he "genuinely cloned" Piffles ... and even had Mr. Piffles 2.0 join him on camera for a quick hello.

George Lemore, who starred in the 1995 film "Candyman: Farewell to the Flesh," doesn't think anyone should pick up the villain's famous hook in the aftermath of Tony Todd's death.

We caught up with the actor a week after his former costar died of natural causes at the age of 69, prompting George to advocate to the powers that be to leave the 'Candyman' franchise alone.

As George put it ... the horror series, which dropped its first film back in 1992, should be left as a classic and shouldn't be rebooted again ... declaring it's comparable to other greats in the popular genre.

Quincy Jones' cause of death has been revealed ... the legendary music producer died from cancer, TMZ has learned.

According to the death certificate released by the Los Angeles County Department of Public Health, obtained by TMZ ... the official cause of death is pancreatic cancer -- which happens to be the 4th leading cause of cancer deaths in the country.

According to the doc, there were no other contributing factors to his death.

Peanut the Squirrel is officially in the clear, testing negative for rabies after his death, but get this -- it's also emerged that both he and Fred the Raccoon were set for the chopping block days before they were seized in a raid ... and their owner is absolutely livid over it.

Mark Longo didn't hold back, telling TMZ it's hard to stomach the bombshell revelation that 4 different agencies had already given the green light to euthanize his pets 7 days before they were even taken from his Upstate New York property on October 30.

The New York Post reports state officials advised the county to euthanize the animals a week before the raid was launched. This news contradicts the New York Department of Environmental Conservation's claim that Peanut had bitten an agent during the raid ... supposedly necessitating the rabies test. Animals must be euthanized to properly test for rabies.

Sergio Mendes' cause of death has been revealed -- the Brazilian musician died from respiratory failure.

According to the death certificate, obtained by TMZ, the official cause of death is acute hypoxemic respiratory failure ... a condition that occurs when there's not enough oxygen in the body.

The condition can be brought on by pneumonia ... and Sergio's death certificate says aspiration pneumonia is an underlying cause here. This specific type of pneumonia is a lung infection resulting from food, liquid or other substances being inhaled into the lungs.