The drummer of a well-known avant-rock band has quit the group after being accused of rape. The band Sigur Ros, which has built a global following for its ethereal sound since forming in Iceland almost 25 years ago, announced on Facebook that it had accepted the resignation of drummer Orri Páll Dýrason.

Dýrason was accused of sexual assault by Los Angeles artist Meagan Boyd.

“In the wake of the extremely serious and personal allegations made against him in recent days we have today accepted the resignation of our bandmate Orri Páll Dýrason to allow him to deal with this privately,” the band said in its Facebook post.

Dýrason joined the band in 1999.

Rolling Stone reports that Dýrason’s resignation comes just days after Boyd claimed in a now-deleted Instagram post that Dýrason “raped me 2 times over the course of a night spent with him during his stay in Los Angeles recording an album.”

Boyd reportedly also wrote in the Instagram post: “Today is the first time I truly wanted to cry as I’ve pushed down and repressed my trauma for years. His name is Orri Páll Dýrason and he is in a band called Sigur Rós.”

Boyd alleges that the assaults happened in L.A. in January 2013, according to Rolling Stone.