Chris Cornell has died age 52, according to his representatives.
In a statement issued to The Associated Press Brian Bumbery reveals the lead singer of Soundgarden and later Audioslave died on Wednesday night in Detroit, Michigan.
The cause of death is unknown and it has been described as "sudden and unexpected".
The musician's family have asked for privacy at this time as they work with the medical examiner to determine the cause of death.
Soundgarden are in the middle of a US tour which was slated to wrap up on May 27 in Oklahoma.
Just eight hours ago Cornell tweeted about a sold out show in Detroit's Fox Theatre, "#Detroit finally back to Rock City!!!! @soundgarden #nomorebullshit".
The venue tweeted images of Chris's last gig.
On Mother's Day in the US last Sunday he tweeted, "Happy Mother's Day to my mom @ToniKaras you thank for giving me the love of my life..." and also acknowledged his wife with, "To my @vickycornell you are an angel and a lioness. The perfect mother and the perfect wife. I love you! Happy #MothersDay2017"
Cornell has three children, Toni, Christopher and Lillian.
He rose to fame in the 90s as one of the original founders of grunge with Soundgarden who, like Nirvana, signed to indie label Sub Pop, before gaining success with Grammy winning singles including Black Hole Sun and Spoonman.
The band split in 1997 but reformed in 2010.
In 2001 he went on to front Audioslave with former Rage Against the Machine members Tim Commerford, Tom Morello, and Brad Wilk. Two years later he went to rehab for drug and alcohol addiction but had been sober ever since.
He also had success as a solo artist with four albums including Euphoria Morning, Carry On, Scream and Higher Truth, which was released in 2015.