LONDON (AP) — Friends, collaborators and fellow musicians expressed shock and sadness Thursday over the death of former One Direction singer Liam Payne, who died in Buenos Aires, Argentina Wednesday at age 31.

A look at some of the reactions:

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“Just a boy.” Anne Twist, mother of former One Direction bandmate Harry Styles, posted on Instagram with a broken-heart emoji.

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“We are heartbroken by the sad passing of Liam Payne,” The X Factor’s official account on X, formerly Twitter.

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“I am shocked and saddened to hear of the death of Liam Payne. It was a pleasure to work with him on our X Factor performance. God bless Liam, thinking of all his loved ones. He will be dearly missed,? Ronnie Wood of the Rolling Stones wrote on X.

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“I am in shock right now. Liam was always so kind to me. He was one of the first major artists I got to work with. I can not believe he is gone.” Singer Charlie Puth, who wrote a song for Payne’s solo debut album, on Instagram.

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“So upsetting to hear the news of @LiamPayne passing Sending love and condolences to his family & loved ones. RIP my friend,” Paris Hilton wrote on X.

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“We greatly appreciate the compassion and kindness he always showed to people facing hunger and hardship. His death is a very tragic loss, and our thoughts are with his loved ones.” Emma Revie, chief executive of the U.K. food bank charity Trussell Trust.

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“We are deeply saddened by the news of Liam Payne’s passing. Our thoughts are with his family, friends, and the many fans who loved and supported him.? Spotify on X.

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“R.I.P. Liam Payne wow I can’t believe it prayers up for the family.” Rapper Juicy J, who had Payne sing on the 2016 track “You.” Via X.

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“RIP Liam… I can’t believe this is real… absolutely heartbreaking.” – Producer and DJ Zedd, who collaborated with Payne on the 2017 song “Get Low.” Via X.

The Associated Press