Accounts of Chris Cornell's last concert in Detroit describe the singer's erratic behavior on stage, offering insight into the last moments before he was found dead at his hotel's restroom after the concert.

Cornell's cause of death was ruled a suicide on Thursday. The singer who was 52 years old, was found dead in his MGM Grand hotel room in downtown Detroit Wednesday night after performing at the Fox Theater in the city. The police continues investigating the death, however the Wayne County Medical Examiner's office ruled the death a "suicide by hanging," according to TMZ. He was reportedly found dead with a band around his neck.

A detailed account by a Soundgarden fan published in the Detroit Free Press, describes how Cornell looked weak and had difficulty singing the songs entirely. He reportedly often staggered back-and-forth across the stage, missed several words in his sentences and walked off the stage for long periods of time forcing the band to improvise.

"Something clearly wasn't right," reporter and fan Ashley Zlatopolsky wrote adding that "it seemed like Cornell wasn't mentally present."

Chris' wife Vicky Karayiannis reportedly became concerned after she failed to reach him after the concert, according to TMZ.

Chris is survived by Vicky and his children Toni, Lillian, and Christopher Cornell. Lillian is the daughter of Cornell's first wife Susan Silver who was his band's manager and whom he divorced in 2004. The last song he reportedly played at the show was a cover of Led Zeppelin's In My Time Of Dying.

Cornell was found unresponsive in his room's bathroom floor by a family friend who had gone to check up on him after the concert. The friend called 911

His death was "sudden and unexpected,' Brian Bumbery a representative for the singer told the Associated Press. He added that the family would be "working closely with the medical examiner to determine the cause of death.''

Cornell has become known as a music icon for his work in his band Soundgarden. 

Our thoughts and prayers go out to Chris's family and friends.