Star Wars icon Carrie Fisher reportedly suffered a massive heart attack while on board a transatlantic flight on Friday (December 23).
Fisher went into cardiac arrest just a few moments before her London-to-Los Angeles flight was due to land and CPR was performed by an EMT on board as life-saving measure, according to TMZ.
A spokesperson for LA Fire Department has confirmed to E! News that medics performed "advanced life support" on the actress before she was transported for emergency medical care nearby.
Accounts of those traumatic scenes on board the Los Angeles-bound flight soon came in from fellow passengers, who shared what they saw on social media.
Among those was comedian and actor Brad Gage, who tweeted: "I'm in complete shock. @AnnaAkana and I sat in front of Carrie Fisher on our flight from London and she was just taken off the plane by EMTs.
"I don't know what happened. Not really sure what to do right now but I hope she is ok. I hope she is ok."
Fellow passenger Anna Akana—a prominent YouTuber and filmmaker—also relayed the events as she witnessed them: "Don't know how else to process this but Carrie Fisher stopped breathing on the flight home. Hope she's gonna be OK.
"So many thanks to the United flight crew who jumped into action, and the awesome doctor and nurse passengers who helped."
The Star Wars and wider science fiction communities rallied around the star quickly after news broke, with Rogue One writer Gary Whitta saying that the "thoughts, hopes, and the Force" of fans worldwide were with Fisher.
Carrie's long-time Star Wars co-star Peter Mayhew—who plays Chewbacca—wrote: "Thoughts and prayers for our friend and everyone's favorite princess right now.. @carrieffisher"
Star Trek's own captain William Shatner also asked his fans to "stop for a moment and send special thoughts" to the actress in this moment of great need.
Carrie Fisher remains one of the most recognizable figures in modern science fiction for her portrayal of Princess (and later General) Leia Organa in both the original Star Wars trilogy and its modern sequels.
The daughter of fellow screen legend Debbie Reynolds and singer Eddie Fisher, Carrie's incredible family legacy is also carried on through her daughter Billie Lourd—who is a cast member on Scream Queens and also had a cameo alongside her mom in The Force Awakens.
Fans all over the world continue to send love to the Fisher family: