Liam Payne's One Direction bandmates lead tributes
We've now had tributes from all the members of One Direction individually, after the band released a joint statement last night.
In the statement, the stars said they were "completely devastated" and wanted time to "grieve and process the loss of our brother".
Here's what they said in their personal statements...
Harry Styles
The As It Was singer said he would "always" miss his "lovely friend".
"His greatest joy was making other people happy and it was an honour to be alongside him as he did it," he said.
Styles continued: "He was warm, supportive and incredibly loving. The years we spent together will forever remain among the most cherished years of my life."
Zayn Malik
"Liam I have found myself talking out loud to you, hoping you can hear me, I can't help but think selfishly that there was so many more conversations for us to have in our lives," Malik wrote on Instagram.
He said he "never got to thank" his friend for "supporting me through some of the most difficult times in my life".
"When I was missing home as a 17-year-old kid, you would always be there with a positive outlook and reassuring smile and let me know you were my friend and that I was loved," he said.
Malik and Payne had famously clashed at times, and the Pillowtalk singer referenced this in his statement but said he "secretly respected" his bandmate when they "butted heads".
Niall Horan
Horan had seen Payne only a few days before his death.
The Irish singer had been performing in Argentina and Payne had gone along to support him at the shows.
"I feel so fortunate that I got to see him recently," he said.
"I sadly didn't know that after saying goodbye and hugging him that evening, I would be saying goodbye forever. It's heartbreaking."
He said he was "absolutely devastated" by Payne's death.
Louis Tomlinson
The star paid tribute to Payne as the "most vital part of One Direction".
He made a heartbreaking mention of Payne's seven-year-old son Bear, saying that if the young boy ever needed him "I will be the Uncle he needs in his life and tell him stories of how amazing his dad was".
"I wish I got a chance to say goodbye and tell you one more time how much I loved you," he said.