The Mars Volta, the prog-rock titans who formed in the aftermath of the respected ’90s punk band At The Drive-In, have broken up. The news came via a series of embittered Tweets from the band’s singer, Cedric Bixler-Zavala.

In the series of Tweets, Bixler-Zavala cites his frustration with his bandmate, Omar Rodriguez-Lopez, as the primary reason for his departure. He mentioned his bandmate’s new projects, saying “I tried my hardest to keep it going, but Bosnian Rainbows (Rodriguez-Lopez’s new band) is what we got instead.” He then went on to thank his fans “for giving a fuck” and added that he was “happy that mars volta ever happened at all.”

The Mars Volta released a new album, Noctourniquet, in 2012, but they did not tour behind it because of Rodriguez-Lopez’s commitments to Bosnian Rainbows and Bixler-Zavala’s commitments to an At The Drive-In reunion. Bixler-Zavala’s passive-aggressive sniping at his former ATDI bandmates on Twitter heavily implies that that band is done for good, as well.