Irish rock band Fontaines D.C. say their longtime manager Trevor Dietz has died, describing the loss as devastating. Multiple outlets report that the group announced his death over the weekend and shared a tribute message on social media. In their statement, the band refers to Dietz as the “sixth member of the band,” crediting him as a constant presence from the beginning of their journey. They also characterize him as someone who cared deeply about the band and about fairness and right conduct in the wider world, saying he was fearless in his beliefs. Several reports describe the band as “utterly heartbroken” and state that they will miss him. One outlet adds that Dietz was 47 at the time of his death, while others focus on the band’s tribute and his role within the group. The coverage consistently frames Dietz as both a manager and a close figure within the band’s inner circle, with the band highlighting their personal and professional loss following his passing.