Black Flag bassist C’El Revuelta has died after being diagnosed with a stage four glioblastoma brain tumor last July. The news was announced on a GoFundMe page that his family set up to raise funds for his medical expenses and confirmed in a Facebook post by former bandmate Henry Rollins. “Today we lost a wonderful person, our hearts are broken Cel passed away this morning Wednesday May 3rd 2017,” a message on the page reads. “He was surrounded by his immediate family. He fought til his last breath. Forever he is loved and will be missed.”

Revuelta joined Black Flag in 1986, replacing bassist Kira Roessler for the band’s final tour. They broke up shortly thereafter. Revuelta also participated in a series of reunion shows in 2003 with Greg Ginn on guitar, Dez Cadena on vocals, and Robo on drums. Although he never appeared on any of the group’s official recordings, he can be heard on bootlegs and seen in Dave Markey’s tour documentary Reality 86’d.

You can donate to his GoFundMe page here.