Credit: George Pimentel/WireImage

Mercury Records’ international product manager Thomas Ayad was among the victims killed in Friday’s Paris attacks, and throughout his career he worked with dozens of musicians all over the world. After his death, Justin Bieber and Keith Richards paid tribute to Ayad in messages, remembering him and thanking him for the work he did.

“Still thinking about Paris and my friend Thomas that we lost in the tragedy,” Bieber wrote Monday night. “He was part of the team for years and I wish I would’ve taken the time to thank him.”

Richards uploaded a photo of him and Ayad and offered “heartfelt condolences.”

Universal Music Group’s CEO Lucian Grainge confirmed Ayad’s death in a statement on Saturday and said, “This is an unspeakably appalling tragedy. On behalf of everyone here at UMG, we extend our most profound sympathies to his parents and all of his friends and family.”

Ayad was part of the team working at the Eagles of Death Metal show at Paris venue Le Bataclan, where 89 people were killed when gunmen fired inside the venue and took concertgoers hostage. All of the band members were confirmed safe after the attacks, but the band’s merch manager Nick Alexander was identified as one of the victims following the show.