Glee star Cory Monteith died from a heroin and alcohol overdose, autopsy results have revealed.
The 31-year-old actor, who was found dead in his hotel room in the Canadian city of Vancouver on Saturday, died from “a mixed drug toxicity” which “involved heroin primarily and also alcohol”.
Barbara McLintock, from the British Columbia coroner's office, said: "There is no evidence to suggest Mr Monteith's death was anything other than a most sad and tragic accident.”
Police said the Canadian actor had been out with other people on the night of his death, but was believed to have been alone when he died. He was discovered by hotel staff after he failed to check out on Saturday.
Monteith played high school football star Finn Hudson in the hit TV show Glee, and dated his co-star and on-screen girlfriend Lea Michele. He soared to stardom when the hit musical show made its TV debut in 2009.
The actor admitted himself to rehab in April this year, and also received treatment when he was 19.
Monteith had talked openly about struggling with addiction since he was a teenager, telling Parade magazine in 2011 he was "lucky to be alive".
Girlfriend Lea Michele issued a statement when he entered rehab, saying she loved and supported him. The pair were reportedly planning to marry.
In interviews Monteith admitted skipping lessons to get drunk and smoke marijuana before quitting school altogether at the age of 16.
According to reports, Monteith had been in Vancouver visiting his mother. The actor was spending time with his girlfriend and motorbike enthusiasts ahead of a rally, it is understood.
A statement from the Glee executive producers, 20th Century Fox TV and Fox Broadcasting, read: "We are deeply saddened by this tragic news.
“Cory was an exceptional talent and an even more exceptional person. He was a true joy to work with and we will all miss him tremendously.
The coroner's office said the investigation into Monteith’s death was continuing, and no other details were available at this time.
Thousands have turned to Twitter to pay tribute to the Glee star. "RIP Cory Monteith," wrote guest star Kristin Chenoweth. "You will be loved. Always."
Meanwhile singer Rihanna tweeted: "Cory Monteith, may your spirit be at peace, and may you fly with the angels... Heartbreaking, my prayers are with all of his loved ones!"