RIP

Frank Sinatra Jr. died in a Daytona Beach hospital of a massive heart attack ... TMZ has learned.

Sinatra was in town to do a concert at the Peabody Auditorium on Wednesday night, but died suddenly in the afternoon ... according to his rep.

We're told Sinatra cancelled tonight's show when he felt lightheaded. He was admitted to Halifax Medical Center, but according to his rep he said he was feeling better. He suffered the heart attack while still at the hospital.

He was famously kidnapped in Lake Tahoe in 1963, when he was 19 years old ... and held ransom for $240,000. He was eventually found, safe and sound, walking the streets of Bel Air.

Reports dogged him for the rest of his life that the kidnapping was a hoax, but the FBI says it was real -- and the kidnappers were convicted.

Sinatra Sr. died in 1998, also of a heart attack. Frank Jr. was 72.

Miss Robbie, the star of "Welcome to Sweetie Pie's" on OWN, is mourning the loss of her grandson ... who was shot and killed in St. Louis, and she believes he was set up.

21-year-old Andre Montgomery was found in a house, unconscious with a gunshot wound Monday night. Police say he was pronounced dead on the scene ... and at this point there's no suspect.

Miss Robbie tells TMZ ... the house where Andre was shot had a recording studio, and he was laying down a rap. She's been told that during the recording session, Andre got a phone call to meet someone outside, and when he went out ... that's when he got shot.

Miss Robbie says there is one strong lead in the case -- Andre was staying in a hotel, and on Tuesday morning someone used a key to enter the room. She says Andre's belongings were missing from the room ... but the person who went in was captured on surveillance cameras.

Andre was frequently featured with his family members on 'Sweetie Pie' ... including his high school graduation in 2013, when Miss Robbie was beaming with pride.

A horse went down like the Titanic near the "Fast 8" set in Iceland after gale force winds sent a fake iceberg flying into a paddock where the animal was grazing.

Local police tell us the horse, named Jupiter, had to be euthanized. Strong winds sent a portion of a plastic iceberg -- a set piece for the movie -- flying and it struck the horse, breaking its leg. Another horse was also injured but is expected to recover.

Neither was involved in the production -- just a case of wrong time and place.

We're told production called the horse owner and broke the news but said insurance would cover the cost of the horse and fence repair.

Legendary rock keyboardist Keith Emerson's death is being investigated as a suicide ... TMZ has learned.

Law enforcement sources tell us Emerson had a single gunshot wound to the head when his girlfriend found him in their home in Santa Monica.

The Emerson, Lake & Palmer co-founder had recently been suffering from a serious medical problem -- a degenerative nerve issue in his right hand ... according to our sources. We're told he could only play the keyboard with 8 fingers at this point and knew it was only going to get worse.

As a result, he was struggling with depression.

Keith Emerson -- founding member and keyboardist of Emerson, Lake and Palmer -- died late Thursday night. He was 71.

According to our sources, Emerson's girlfriend discovered his body in their home and described the passing as "sudden." We're told Emerson had plans to tour in Japan next week.

Emerson's death was confirmed on the band's official Facebook page ... though no cause of death was given.

Bandmate Carl Palmer released a statement, saying, "Keith was a gentle soul whose love for music and passion for his performance as a keyboard player will remain unmatched for many years to come."

Emerson, Lake and Palmer was one of the most popular progressive rock bands of the 1970s ... and Emerson's solos are legendary.

Moonie, the dog who shared the big screen with Reese Witherspoon in "Legally Blonde" has died.

Reese just broke the ruff news ... posting a pic of her and Moonie, who played Bruiser Woods. She said, "I will never forget all the days we spent together ... I'm sure his tail is wagging in the sky."

Moonie was a rescued chihuahua before landing the "Legally Blonde" gig ... and was good pals with Gidget, the Taco Bell dog.

He was 18.

#RIPBruiser

George Martin, the incredibly brilliant producer of The Beatles who was such an influence on the group he was known as "the 5th Beatle" -- has died.

Martin passed away Wednesday at his home in London.

His influence cannot be understated. When Martin met the Beatles in 1962 he was not impressed ... he felt their music was all over the place, but, as he put it, "They were like plants in a hothouse. They grew incredibly fast."

Martin got initial resistance from John Lennon and Paul McCartney, who wrote the songs for the group, but they quickly grew to trust Martin like a partner. When they were recording "Yesterday," it was Martin who wanted to add a string quartet. Paul didn't get it at first, saying "We're a rock 'n' roll band!" Paul relented, and an empowered Martin added a cello and violin.

Martin's knowledge of technology was inspiration for the group ... best shown in songs like "Penny Lane," "Strawberry Fields Forever" and the crown jewel -- the album, "Sgt. Pepper's Lonely Hearts Club Band."

Paul called Martin "a second father," but all 4 guys revered him.

The shooting death of ex Eagle Randy Meisner's wife just got even more bizarre -- a pair of cowboy boot spurs literally triggered the rifle that killed her.

As we reported ... Lana Meisner was killed while moving the case holding the rifle. Law enforcement sources now tell us there were 2 spurs in the case, and when Lana picked up the case ...the spurs fell and hit the trigger.

Former Eagles member Randy Meisner has been cleared in the bizarre shooting death of his wife.

As we reported, Lana Meisner died Sunday night from a gunshot wound ... this after she had called 911 an hour and a half earlier to report domestic violence. She claimed Randy was waiving a BB gun.

LAPD detectives have concluded she accidentally shot herself. It seems weird, because police say she was "moving a rifle that was stored inside the closet" when it accidentally went off. It's a little odd as to why she would be "moving" a rifle less than 2 hours after calling 911, reporting domestic violence.

The wife of former Eagles member Randy Meisner was shot and killed Sunday at the couple's home.

Lana Rae Meisner was shot dead in the couple's Studio City home. The police are now conducting a death investigation.

Law enforcement sources tell TMZ, an hour and a half before Randy called to report his wife had been shot, Lana Rae called 911 to report domestic violence at the house. She claims he was waiving a BB gun and "acting erratically."

The second call came in at 6:59 PM ... Randy told cops his wife went into another room, closed the door and he heard a gun shot. He says he went into the room and discovered she was shot in the head.

We're told at 4:45 AM Monday Randy was taken to the hospital after "acting in an altered state."

The couple has had many conflicts in the past. Randy's kids tried to get a conservatorship based on his alleged mental instability. At some point he was in an Encino hospital where he threatened to kill everyone there with an AK-47.

Nancy Reagan has died ... TMZ has learned from a close family member.

The former first lady was living in Bel Air and has been in failing health in recent years. She died from congestive heart failure at her home.

Mrs. Reagan married Ronald in 1952 and went on to became a First Lady who at first was severely criticized for her fancy taste -- particularly in china -- but went on to become beloved, along with her husband.

She'll be buried next to her husband at the Ronald Reagan Presidential Library in Simi Valley.

Nancy was a former actress who starred in B movies, before meeting her future husband.

She was fiercely loyal to Ronald and extremely protective, often getting in his ear about White House staffers she thought were less than loyal.

The knife found buried on O.J. Simpson's former estate was more than capable of inflicting the mortal wounds on Nicole Brown Simpson and Ron Goldman ... so says the man who examined the wounds of the victims.

Dr. Irwin Golden, who served as the Deputy Medical Examiner, testified in the O.J. Simpson case and performed both autopsies, tells TMZ the folding buck knife could have severely cut both victims. Nicole was brutally attacked with a deep neck wound -- 2 1/2 inches deep and 5 1/2 inches across -- and Golden says a 4" blade could have done the deed. We broke the story ... the knife in question has a 5" blade.

Sources connected with the 1994 investigation and others involved in the evaluation of the knife tell us there was always a wide belief among LAPD cops that Simpson used a buck knife.

TMZ broke the story ... a construction worker found the knife buried on the perimeter of the property in 2002, gave it to a retired LAPD cop who never turned it in, instead taking it home and putting it in his tool box. The cop claims he alerted LAPD when he got it, but they expressed no interest.

Dr. Golden cautioned if the murder weapon was a buck knife it had to be "heavy." A knife expert tells us back in '94 buck knives were made with heavy American-made steel.

The knife is being tested for fingerprints and hair. Next week it goes to the serology unit for DNA testing.

Rapper Bankroll Fresh was shot to death Friday night.

Cops say gunfire erupted outside an Atlanta recording studio. The shootout was bedlam ... more than a dozen shell casings were found. We don't know if anyone else was hit.

2 Chainz -- also from Atlanta -- tweeted about the "Hot Boy" rapper's death ... "Man I'm a fan of Bru and always will be, I'm in shock at the moment !! Senseless deaths we just got to stop it, I'm speaking up now."

So far, no suspects, but cops are on the hunt.

Bankroll was 28 years old. RIP.

Lee Reherman was juggling multiple unfinished TV projects before his death -- but we're told the shows will go on without him.

Reherman -- best known as Hawk on "American Gladiators" -- was working behind the scenes and producing two new shows -- one is a fitness-focused series called "Undercover Trainer."

We're told Reherman was producing a reality show called "Pin-Up Garage" about hot female car mechanics. Lee was working with EP Scott Satin and developing both shows for Byron Allen's Entertainment Studios.

Reherman also co-starred on "The First Family," playing a secret service agent. No word yet on what changes will have to be made -- we're told he's written into every episode for the upcoming season.

Bobbi Kristina's family and friends will gather Friday night on what would've been her 23rd birthday.

It's a difficult day made even tougher for Bobbi Kristina's family following the medical examiner releasing the autopsy report -- but BK's brother Landon Brown says the family's focus is celebrating Bobbi's life.

Landon tells us Bobbi's friends and family will be gathering at a private residence in L.A. tonight to share memories and talk about the good times. We're told Bobbi's siblings, cousins, aunts and uncles will be there but her father, Bobby Brown, will most likely not be attending.

We're told her relatives in Atlanta have a similar evening planned.

Landon released a song Friday about his sister as a way to honor her memory. He tells us he recorded it in the hospital while he was staying with Bobbi during the months she remained in a coma. Landon says he recorded it next to her bedside, hoping she'd hear the song.

Tony Dyson, the man behind the birth of 'Star Wars' character R2-D2 has died.

Sources close to Dyson tell TMZ Tony was recently at a convention in Holland and flew back to Malta where he lives. We're told Tony's girlfriend became worried when she couldn't contact him so she called the cops. When police went to Tony's house, they found his body.

Local reports say police are investigating, but at this time there's nothing suspicious about his death.

Tony was the technician behind the creation of the R2-D2 robot for 'Star Wars: A New Hope' in the '70s. Tony also did robotics work on "Superman II" with Christopher Reeve and "Dragonslayer" in 1981.

He was 68 years old.

R.I.P.