Frontman and founder of popular ’90s nu-metal band Static X, Wayne Richard Wells, has died, according to SPIN. He was 48.

The cause of death has not been released. The band’s publicist confirmed Wells’ death to Billboard on Saturday.

Also, there was a brief note confirming his passing on the Static-X official Facebook page. The note touched on Wells future plans, implying his death was both accidental and unexpected.

“Wayne Static was the enigmatic former frontman and namesake of Static-X, who later forged a successful solo career,” reads the statement. “Wayne was scheduled to co-headline tours with Powerman 5000 and Drowning Pool over the next several months.”

“No additional information is available at this time,” the statement concludes.

Though no cause of death has been released, it hasn’t stopped others from speculating.

“Too many musicians are dying from overdoses,” notes Jacoby Shaddix, lead singer of Papa Roach, in an Instagram post acknowledging Wells’ death. “The number of friends that I have lost to addiction is crazy.”

Others took to social media to express their grief.

“Very sad to hear of @IAmWayneStatic’s passing. Spent a lot of time together on @TheOzzfest tours,” tweeted Ozzy Osbourne. “A tragic loss. Love to his family/friends.”

“I am shocked to hear that Wayne Wells (Wayne Static) has passed away. I played with him in his first band, Deep Blue Dream, in 1987/88,” tweeted Smashing Pumpkins frontman Billy Corgan.

Wayne Richard Wells, better known as Wayne Static, died Saturday at the age of 48. The cause of death has not been made public.