Friends, collaborators and music icons are sharing social media tributes to Liam Payne , the former founding member of boy band One Direction , who was found dead Wednesday in Buenos Aires, Argentina. Payne, who fell from the third floor of a hotel , was 31 years old.

The British singer was famously discovered on The X Factor in 2010 and placed in the platinum-selling boy band alongside Harry Styles , whose mother, Anne Twist, shared a broken heart emoji on Instagram with the caption: Just a boy

While countless fans gathered to mourn his death outside the hotel where Payne had been staying, those closest to him including friend and former collaborator Charlie Puth took to their social media accounts to pay tribute.

I am in shock right now, wrote Puth , who worked with Payne on 2017s Bedroom Floor, in an Instagram Story on Wednesday. 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

I am so upset right now, he added over an old video of them together , may he rest in peace.

Payne publicly struggled with the stratospheric fame he found as a teenager, but despite One Direction going on an indefinite hiatus in 2016 , he found success as a solo artist releasing chart hits with rappers Quavo, Juicy J and A Boogie With a Hoodie.

R.I.P. Liam Payne wow I cant believe it, Juicy J shared on X , prayers up for the family.