USA Cycling has announced Olympic team pursuit silver medallist Kelly Catlin has died.
Catlin was part of the four-woman team at Rio 2016 that finished second behind Great Britain in the gold-medal race.
The 23-year-old won three successive world titles from 2016 in the event, while also forging a career on the road with Rally UHC Cycling.
Her death was confirmed by USA Cycling on Sunday following reports she had passed away on Friday.
"The U.S. cycling community suffered a devastating loss with the passing of Kelly Catlin, USA Cycling National Team member," said president Rob DeMartini.
Kelly Catlin dies
Kelly Catlin dies
(From L) Silver medallists USA's Jennifer Valente, USA's Chloe Dygert, USA's Kelly Catlin and USA's Sarah Hammer pose with a flag and their medals on the podium after the women's Team Pursuit finals track cycling event at the Velodrome during the Rio 2016 Olympic Games in Rio de Janeiro on August 13, 2016. / AFP / Odd ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)
Bronze medallist US Kelly Catlin poses on the podium after taking part in the women's individual pursuit final during the UCI Track Cycling World Championships in Apeldoorn on March 3, 2018. / AFP PHOTO / EMMANUEL DUNAND (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)
2018.03.04, Apeldoorn , UCI Track Cycling World Championships Apeldoorn 2018 , kolarstwo torowe , Mistrzostwa Swiata Apeldoorn 2018 nz Chloe Dygert (USA) - Women`s individual pursuit WORLD RECORD, Annemiek van Vleuten (NED), Kelly Catlin (USA) fot. Adam Jastrzebowski / Foto Olimpik
USA women's team pursuit gold medalists, (L-R), Kelly Catlin, Chloe Dygert, Kim Geist and Jennifer Valente, Apeldoorn, The Netherlands March 1, 2018 (Photo by Casey B. Gibson)
Kelly Catlin of the USA, 3rd place in the women's individual pursuit, Apeldoorn, The Netherlands March 3, 2018 (Photo by Casey B. Gibson)
Women's pursuit medal winners, (L-R) Rebecca Wiasak in second, Chloe Dygert of USA in first, and Kelly Catlin of the USA in third. Hong Kong Velodrome, April 15, 2017 (Photo by Casey B. Gibson) *** Please Use Credit from Credit Field ***
The US women's pursuit team celebrates their gold medal on the podium. Left to right, Sarah Hammer, Jennifer Valente, Chloe Dygart and Kelly Catlin. (Photo by Casey B. Gibson) *** Please Use Credit from Credit Field ***
Members of the United States women's pursuit team celebrate winning the gold medal with the Stars and Stripes. Left to right, Kelly Catlin, Chloe Dygart, Sarah Hammer and Jennifer Valente. (Photo by Casey B. Gibson) *** Please Use Credit from Credit Field ***
US cyclists (L-R) Chloe Dygert, Kimberly Geist, Kelly Catlin and Kimberly Geist and Jennifer Valente celebrate with their gold medals after winning the Women's Team Pursuit final at the 2017 Track Cycling World Championships in Hong Kong on April 13, 2017. / AFP PHOTO / Anthony WALLACE (Photo credit should read ANTHONY WALLACE/AFP/Getty Images)
Cycling: 31st Rio 2016 Olympics / Track Cycling: Women's Team Pursuit Finals
Podium / Team UNITED STATES (USA)/ Sarah HAMMER (USA)/ Kelly CATLIN (USA)/ Chloe DYGERT (USA)/ Jennifer VALENTE (USA)/ Silver Medal / Celebration /
Rio Olympic Velodrome /
Summer Olympic Games / (Photo by Tim de Waele/Corbis via Getty Images)
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"Kelly was more than an athlete to us, and she will always be part of the USA Cycling family.
"Our thoughts and prayers are with the Catlin family. This is an incredibly difficult time and we want to respect their privacy.
The U.S. cycling community suffered a devastating loss with the passing of Kelly Catlin, USA Cycling National Team member.
"The entire cycling community is mourning this immense loss. We are offering continuous support to Kelly's team-mates, coaches and staff. We also encourage all those who knew Kelly to support each other through the grieving.
"We are deeply saddened by Kelly's passing, and we will all miss her dearly. We hope everyone seeks the support they need through the hard days ahead, and please keep the Catlin family in your thoughts."
Rally UHC Cycling also tweeted their condolences following the news of Catlin's death.
"The news of Kelly's passing has hit the team hard," they said. "Losing an incredible person at such a young age is very difficult.
"Kelly was our friend and team-mate. Our heartfelt condolences go out to her family and those who were fortunate enough to know her best."