***WARNING: This story contains graphic content. Viewer discretion is advised.***
Details about Liam Payne's final weeks alive are being pieced together by investigators as his loved ones and fans grieve his tragic death.
Payne, who was a former member of the wildly popular boy band One Direction, was found dead after falling from a hotel balcony in Argentina on Wednesday evening.
Video on social media shows him smiling with fans only an hour before he died, leaving everyone wondering what happened ahead of his sudden passing.
Payne arrives in Argentina for a trip and is joined by his girlfriend, Kate Cassidy, for a portion of the getaway.
Cassidy chronicles their ventures, sharing what she calls a "travel blog"on TikTok.
"We literally packed an hour before our flight; it was pretty hectic," she says.
Another post from later that night showed them before they went out to dinner, with Cassidy talking about their outfits and Payne appearing bored.
"Is Liam ok? Genuine question," one person wrote in response to the post.
Payne and Cassidy reunite with Payne's former One Direction bandmate, Niall Horan, who performed at the Movistar Arena on Oct. 2 and Oct. 4.
Cassidy accompanies Payne to the show, with video showing the couple smiling and dancing throughout the concert.
The two enjoy iced coffee before going bowling, with Cassidy noting "he drags me to bowling at least four times a week."
Payne and Cassidy order take-out Chinese, with Payne saying he was less than thrilled with the dood.
"It tastes like a sock," he says. "I don't know why I know what socks taste like, but apparently I do."
The video later shows them laughing as Cassidy opens fortune cookies.
Payne and Cassidy attend a Paul McCartney concert, as the former Beatle performed two shows at the Estadio Monumental de River Plate on Oct. 5 and Oct. 6.
Payne was spotted posing for photos with fans in Argentina.
A carousel of photos on Cassidy's TikTok shows she and Payne doing a variety of activities, including dining at restaurants, horseback riding
Cassidy leaves Argentina and returns to Florida.
"I was so ready to leave, honestly," she says, adding that the trip was planned for five days but was extended to two weeks.
Payne falls from a balcony and is found dead outside the Casa Sur Hotel in Buenos Aires.
Pablo Policicchio, who is the spokesman for the Security Ministry of Buenos Aires, tells The Associated Press Payne "had thrown himself from the balcony of his room."
Medics arrive within minutes and Payne is pronounced dead.
Two photos immediately start circulating on social media, with media outlets claiming the images are from the scene.
The Buenos Aires police say they found Payne's hotel room "in complete disarray" with broken objects and furniture. They found packs of clonazepam, a central nervous system depressant, energy supplements and over-the-counter medications strewn about his belongings. The Argentine public prosecutor says there also appeared to be alcohol and narcotics in the room.
Forensics teams report that a whiskey bottle, lighter and cellphone were retrieved from the building's internal courtyard where Payne's body was found.
The prosecutor says an autopsy showed internal bleeding and 25 traumatic injuries to his skull, limbs and abdomen, consistent with a fall. It said those injuries alone were enough to cause his death.
There were no signs of a third party being involved, the prosecutor says, but describes Payne's case as "suspicious," citing the star's apparent alcohol and drug usage.
The lack of defensive injuries on Payne's hands indicated he may have fallen into a state of unconsciousness, the public prosecutor says, contributing to the possibility that Payne "was going through some kind of substance abuse episode" at the time.
All signs indicate Payne was alone at the time of his death, the prosecutor adda.
The results of the requested toxicology tests are pending and could take weeks to become public.
"We are heartbroken,"Payne's family say in a statement. "Liam will forever live in our hearts and we'll remember him for his kind, funny and brave soul. We are supporting each other the best we can as a family and ask for privacy and space at this awful time."
The surviving members of One Direction, including Horan, as well as Louis Tomlinson, Harry Styles and Zayn Malik, later release a statement.
"We're completely devastated by the news of Liam's passing. In time, and when everyone is able to, there will be more to say. But for now, we will take some time to grieve and process the loss of our brother, who we loved dearly. The memories we shared with him will be treasured forever."
Payne's father,Geoff Payne, arrives in Buenos Aires on Friday. He identifies his son's body at the morgue, as well as visits the prosecutor's office to arrange plans to return the pop star's remains to England, authorities say.