According to a recently released coroner's report, Survivor singer Jimi Jamison's Aug. 31 passing was partly the result of substance abuse.

WMC Action News 5 reports that although Jamison suffered from 90 percent blockage in his coronary arteries, supporting initial speculation that he'd died of a heart attack, he also experienced "hemorrhagic stroke of the brain with acute methamphetamine intoxication contributing." The report adds that "Because meth was determined to be a contributor, and the circumstances leading up to the death were not suspicious, the coroner ruled Jamison's death as an accident."

Jamison made his debut with Survivor for their 1984 album 'Vital Signs,' replacing original vocalist Dave Bickler and fronting the band for an impressive string of hits that included 'I Can't Hold Back,' 'The Search Is Over' and 'Is This Love.' The group split in 1993, two years after Jamison embarked on a solo career with his 'When Love Comes Down' album; they'd later reunite with Bickler back on vocals, only to see him depart the lineup -- and once again be replaced with Jamison -- in 2000.

Jamison departed Survivor again in 2006, refocusing on his solo career for a stretch that produced albums with Survivor founder Jim Peterik and former Toto singer Bobby Kimball, then returned to the fold for a final time in 2011, joining Bickler as part of a two-singer lineup that was touring and recording new material at the time of his death.

Survived by three children and one grandchild, Jamison remained a fixture in the musical community of his Memphis hometown, and was well known as an ardent supporter of a variety of charities, including St. Jude Children's Research Hospital and the Make-a-Wish Foundation; the night before his death, he'd performed with Survivor at a cancer benefit in California. As his family wrote in a statement after his passing, "Jimi was a friend to everyone he met. He was a loving father and grandfather and was always a person who valued people more than anything else."

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