The 41-year-old singer reportedly took his own life and was found hanged at a private residence in Palos Verdes Estate in Los Angeles just before 9am on Thursday (20.07.17)m TMZ reports.
Just a few days ago, Chester had been seen at a recording studio with his bandmates.
The 'Crawling' hitmaker - who had three children with wife Talinda Bentley and another three from previous relationships - had struggled with drugs and alcohol abuse in the past and previously admitted he had considered suicide after being abused as a child by an older male.
He confessed to being a ''full blown, raging alcoholic'' but had tried to put that behind him.
Speaking in 2011, he said: ''I don't drink. I choose to be sober now. I have drunk over the last six years, but I just don't want to be that person anymore.''
He also spoke frankly about being abused.
He said: ''If I think back to when I was really young, to when I was being molested, to when all these horrible things were going on around me, I shudder.''
The 'In the End' hitmaker was also the singer in Dead by Sunrise, and performed as frontman for Stone Temple Pilots from 2013 to 2015, as well as collaborating as a solo artist with the likes of his Santana, Motley Crue, his close friend Chris Cornell - who committed suicide in May - DJ Z-Trip and Handsome Boy Modeling School.
He also had movie roles in 'Saw 3D' and both 'Crank' films.
Janelle Monáe parties and drives with her girl squad in the video for her latest single 'Crazy, Classic, Life', taken from her album 'Dirty...
Continuing the softer sound of their 2015 release 'That's the Spirit', BMTH are about to release 'Amo' (January 25th 2019) featuring their newest...
To coincide with the new BBC mini-series adaptation of leporine epic Watership Down, Sam Smith has unveiled a new single entitled 'Fire on Fire'.
Her first single since leaving the jungle on 'I'm a Celebrity... Get Me Out of Here!', Fleur East drops the super-choreographed video for 'Favourite...
Dropping the video for his latest album's second single, 'Excuses', is Olly Murs just months after the release of 'Moves' featuring Snoop Dogg.
He released 'Everythang's Corrupt' last month, and now Ice Cube has dropped a video for the record's third single 'That New Funkadelic'.
Dappy has unveiled a new stripped down number entitled 'Count On Me' more than six years after the release of his debut solo album.