Detroit police spokesperson Michael Woody released details of Cornell's death, telling Billboard, "When the units arrived they were met by a gentleman who indicated that Chris Cornell had been found in his room".
The exact causes of death are still to be determined, but the family will be working closely with the medical examiner, the statement said. A full autopsy report has not yet been completed.
Come back to the Free Press for more information on this developing story. Cornell had performed a concert with Soundgarden in Detroit that night.
Cornell had a long battle with substance addiction, describing himself in a 2009 interview with The Guardian as "a pioneer" in his use of the opiate OxyContin in the years after Soundgarden first disbanded that led to a stint in rehab.
The death was first confirmed by Cornell's representative Brian Bumbery, who said in a statement to the AP, it was "sudden and unexpected" and that his wife and family were shocked. A cause of death has not been released.
The Soundgarden and Audioslave frontman sadly passed away at the age of 52 on Wednesday (17.05.17) night, and it has now been reported by medical officials that the star hanged himself inside his hotel room at the MGM Grand Hotel in Detroit, Michigan. Detroit Police Officer Jennifer Moreno told ABC News that t.
Woody said Cornell's wife had called a family friend and asked him to check on Cornell; the friend forced open a hotel room door and found Cornell on the bathroom floor.More news: Trump talks of engagement to resolve North Korea crisis
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Soundgarden's third studio album, 1991's Badmotorfinger, spawned popular singles Jesus Christ Pose, Rusty Cage and Outshined that received regular play on alternative rock radio stations.
The music world is in shock at the death of Cornell at 52.
He teamed up with members of the latter for a project called Temple of the Dog in tribute to deceased singer and friend Andrew Wood.
The group hit its commercial peak with its breakout album, "Superunknown", in 1994, which was nominated for a Grammy Award for best rock album. It included hit singles "Spoonman", "Fell on Black Days", "Black Hole Sun", "My Wave" and "The Day I Tried to Live".
Cornell was one month into a nationwide tour with Soundgarden, the band he fronted through the birth of grunge in the '90s before the band broke up in 1997. Later, he would find success with Audioslave, a supergroup featuring former members of Rage Against the Machine.
The final solo recording released by Cornell was "The Promise", released on May 10.
Cornell is survived by his wife Vicky Karayiannis-Cornell, their two children Toni, 12, and Christopher Jr., 11, and his 16-year-old daughter with ex-wife Susan Silver, Lillian Jean.