RIP

One of the last images of Prince ... happy, carefree, hair blowing in the wind on his bike.

These photos were taken Monday ... 3 days before he died. The pics were taken by a woman who lives a mile down the road from Paisley Park.

She says Prince was the picture of happiness, smiling as he cruised around the neighborhood. She says he was riding for at least an hour, and there was no sign of fatigue.

Prince had been riding around in the days leading to his death. We've seen video of him last weekend riding in a shopping mall parking lot, waiting for his girlfriend.

Chyna's death could benefit the health of future athletes by donating her brain to doctors studying the consequences of concussions and WWE wrestlers.

In an interview with the NY Daily News, Chyna's longtime friend and manager Anthony Anzaldo says the wrestler was contacted months ago about joining a brain injury lawsuit against the WWE. Anzaldo says Chyna wasn't interested in the suit ... but thought the science behind it was interesting.

He says shortly after her death, he got a call about donating her brain to the study. Anzaldo says he's working with Chyna's family to allow the coroner to release her brain to the docs.

And get this ... Anzaldo says the same guy carrying out the brain study is Dr. Omalu ... the dude played by Will Smith in "Concussion."

We spoke to John Cena earlier this month in Beverly Hills who said he'd be all for donating his brain if it helped others.

Prince's body had no obvious signs of trauma when he was found in an elevator ... according to the Sheriff running the investigation into his death.

Carver County Sheriff Olson gave few details about what his deputies found at Paisley Park on Thursday morning. He said they've found nothing to indicate the superstar's death was a suicide.

A rep for the Medical Examiner's Office said the autopsy was complete, but they will not release any results until toxicology testing is also complete ... and that could take several weeks.

We broke the story ... Prince had been to his local Walgreens 4 times in the week before his death -- and had been treated for a Percocet OD in Moline, IL last week. When asked if he knew of any medications Prince was taking ...the Sheriff said he "would not confirm."

12:54 PM PST -- The coroner's office just released Prince's body to his family.

Prince's autopsy was just completed ... but the cause of the singer's death is still a mystery.

The four hour procedure started at 9 AM CDT Friday and Prince's body will be released to his family later today. We're told results from the exam won't be disclosed until toxicology results come back ... which could take several weeks.

A rep for the Midwest Medical Examiner's Office in Minnesota says they're still collecting the singer's medical records as well as family medical history to complete their investigation.

As TMZ reported, Prince was spotted Wednesday pacing outside a local Walgreens waiting on a prescription.

Prince had OD'd on Percocet days before his death, and he ingested so much, EMTs had to administer a "save shot" at the airport where his plane made an emergency landing to save his life.

Sources in Moline, Illinois tell TMZ, Prince's entourage told responders he had taken the painkiller after his Atlanta concert which triggered the emergency.

Percocet is a painkiller which contains a combination of acetaminophen and oxycodone, an opioid. It is highly addictive.

We're told Prince was taking painkillers for a hip problem. We're told he had corrective surgery for his hips around 2010.

As we reported, Prince went to his local Walgreens 4 times in the week leading up to his death. We got a photo of Prince in the parking lot of the Walgreens hours before he died. Witnesses say he was pacing and agitated, waiting for someone to bring out his meds.

Joey Fatone says he knew his friend Chyna was "having some trouble" recently but didn't know how bad her issues had become ... telling TMZ Sports they had just made plans to hang out.

Fatone and Chyna have known each other for years -- and the *NSYNC member says he was sad to learn of her passing this week ... especially since he just had a conversation with her last week.

"I know she was having some trouble and stuff like that but didn't know [it had gotten] that bad."

Chyna had struggled with substance abuse for years -- and officials are investigating her death as a possible overdose.

Fatone says the two had just gotten back in touch with each other and were hoping to hang out sometime soon ... but she died before they could get those plans off the ground.

BTW, Joey made this video last year campaigning for Chyna to be inducted into the WWE Hall of Fame.

Prince was treated for a drug overdose 6 days before his death ... multiple sources tell TMZ.

We broke the story ... Prince's private jet made an emergency landing in Moline, Illinois last Friday, hours after he performed in Atlanta. At the time his reps said he was battling the flu ... something we questioned because his plane was only 48 minutes from home before the unscheduled landing.

Multiple sources in Moline tell us, Prince was rushed to a hospital and doctors gave him a "save shot" ... typically administered to counteract the effects of an opiate.

Our sources further say doctors advised Prince to stay in the hospital for 24 hours. His people demanded a private room, and when they were told that wasn't possible ... Prince and co. decided to bail. The singer was released 3 hours after arriving and flew home.

We're told when Prince left he "was not doing well."

We know authorities in Minnesota are trying to get the hospital records from Moline to help determine cause of death.

We have made more than a dozen attempts to reach Prince's reps for comment, but they went radio silent.

Prince's legion of fans recreated the closing scene of "Purple Rain" ... on a much bigger scale, and it was pretty awesome to see from above.

Mourners gathered in downtown Minneapolis Thursday night, and a reporter had the perfect birdseye view when the crowd of several hundred people sang along to Prince's signature anthem.

Prince was all over NYC ... with Alicia Keys, Jennifer Hudson and the whole cast of "Hamilton" saluting the singer.

Alicia's one of the few artists Prince allowed to cover his music. On her debut album she recorded a new version of "How Come You Don't Call Me" -- and during a private show Thursday night she played the song and thanked Prince for teaching her "how to be bold and brazen."

He got more props on Broadway ... Hudson and the cast of "The Color Purple" closed with a "Purple Rain" sing-along -- and the "Hamilton" crew stepped outta the 18th century for "Let's Go Crazy."

Charlie Murphy is reflecting on his most famous basketball opponent ... opening up about how Prince didn't just change music -- he changed the world.

Of course, Charlie's "Chappelle's Show" sketch about his pick-up game with Prince is legendary ... but Murphy says it shouldn't have been a shock that His Purpleness was such an incredible athlete.

"If you seen his last show, how could you not watch his show and go, 'That dude is an athlete!'"

Prince clearly made an impact on Murphy -- and he joined the guys on the "TMZ Sports" TV show on FS1 to tell us what the singer meant to him. It's pretty good stuff.

Ray Romano thought Doris Roberts was awesome in many ways ... that's what he told our photog Thursday as he left The Redbury in Hollywood.

Ray was clearly joking about the kissing thing, but maybe not the other qualities that made Doris special.

A vibrant rainbow graced the skies above Prince's home Thursday ... hours after he died.

Mourners were paying their respects outside Paisley Park when the rain stopped, the skies opened and the rainbow appeared.

It's interesting ... hours after Nancy Reagan died in March, a rainbow appeared over the home she shared with President Reagan.

A panicked man called 911 from Paisley Park after finding Prince unconscious, and blurted out ... "people are just distraught" here.

We've obtained the transcript of the 911 call which police say was made by an unidentified male who immediately said, "Um, we're at Prince's house." Seconds later the man stammered before saying, "So, yeah, um, the person is dead here."

For some reason the caller did not know the address at Paisley Park, and had to call someone else in to the room to provide that info.

When the dispatcher asked, "Are you with the person who's ... " -- the caller interrupted, "Yes, it's Prince."

Paramedics arrived and quickly reported back to dispatch, "You can cancel anybody going to Audubon, confirmed DOA."

Prince's longtime friend and collaborator Sheila E. wants answers -- and she's jetting to Minnesota right now to get them.

We just got Sheila as she was boarding a flight at LAX, and she was visibly shaken about the news of Prince's death. She gave us a message for the millions of fans mourning around the world.

Prince hit up a local pharmacy hours before he died -- the 4th time he visited this week -- indicating his health was far worse than the simple flu.

TMZ obtained this photo of Prince leaving a Walgreens near his home in Minnesota Wednesday night at around 7 PM.

Our sources tell us Prince had frequented the Walgreens for years -- but last night, people at the store were concerned because he looked much more frail and nervous than usual.

As we previously reported, Prince's team told the media he was suffering from the flu. It seemed odd, because his private jet had to make an emergency landing in Moline, Illinois last Friday, just 48 minutes from his home.

Prince was hospitalized ... but was discharged after only a few hours. Our sources in Moline told us at the time they felt Prince left the hospital way too soon because he was "not doing well" and needed further medical care.

On Saturday, the day after he was released from the hospital, Prince took the stage at a dance party near his home and curiously said, "Wait a few days before you waste any prayers."

Prince's shocking death prompted even President Obama to shout-out the musical genius who "did it all."

The Prez said, "Few artists have influenced the sound and trajectory of popular music more distinctly, or touched quite so many people with their talent. As one of the most gifted and prolific musicians of our time, Prince did it all. Funk. R&B. Rock and roll."

Obama's a HUGE fan and even got Prince to play a top secret show at the White House last summer for 500 people. An Obama staffer called the event a "private party for friends and family."

Like so much of Prince's life -- the White House show was totally private. No video's ever surfaced, which is a damn shame. He reportedly jammed with Stevie Wonder during the gig.

He performed his final concert in Atlanta one week ago.