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.
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