Jon Wysocki, founding drummer of the rock band Staind, died on May 18.

No cause of death was provided.

However, on Saturday, friends posted that he was in the ICU due to issues with his liver.

Jon Wysocki of Staind poses at a photo session at a private studio on June 24, 2008 in Los Angeles, California

Jon Wysocki.Annamaria DiSanto/WireImage

Their first studio album,Tormented, arrived in 1997.

Staind’s third studio album,Break the Cycle, debuted at No.

1 on the Billboard 200 on the strength of the single “It’s Been Awhile.”

Jon Wysocki, Johnny April, Mike Mushok and Aaron Lewis of Staind poses at an event marking the release of “The Illusion of Progress” at the Hard Rock Cafe in Times Square on August 19, 2008 in New York City.

Jon Wysocki (left) with Staind.Jason Kempin/Getty

The album ultimately went five times platinum.

Jason Kempin/Getty

Lewis acknowledged some of that friction while paying tribute to Wysockion X (formerly Twitter).

“Im so sad.

I lost my friend.

A friend I loved like a brother… fought with like a brother,” he wrote.

“The battles we fought together.

The battles we fought against each other.

The battles we fought side by side alone with our own demons.

The battles we won and the battles we lost.

He was my friend.

He was our brother.

My heart is broken.

My world has changed.”

We came together with Mike, Aaron, and Johnny April in 1995 and founded Staind.

The 17 years that followed were some of the best memories of our times together.

Our hearts go out to Jons family, and fans around the world who loved him."

After Staind, Wysocki had a short stint with fellow nu-metal stalwarts, Soil.

Though, he never recorded an album with the “Halo” band.

“Today we lost one of the greats,“the band wrote on social media.

“Jon Wysocki was not only a great friend, a great drummer, but a great human being.

It was an honor to have him in SOiL for the time we did.

We had so many laughs, so many good times.”

He joined the Nashville group Lydia’s Castle in 2021, with which he played until his death.

The band also shared aseries of photos of Wysockiwith the band and fans on their Instagram account.