UPDATE: Glee star Lea Michele is said to be "devastated beyond belief" and "completely inconsolable" after the death of her boyfriend Cory Monteith.
The 31-year-old actor was found dead in his hotel room in Vancouver, Canada, on Saturday after spending a night out in the city with friends, leaving his girlfriend "inconsolable".
The Glee star, who had been dating her co-star for a more than a year, has asked people to respect her privacy as she seeks comfort among family and friends.
A spokesperson for the actress, 26, issued a statement, saying: "We ask that everyone kindly respect Lea's privacy during this devastating time."
A source close to the brunette beauty also told HollywoodLife.com: "She [Lea Michele] is absolutely hysterical and completely inconsolable. She is devastated beyond belief."
Lea supported Cory when he voluntarily checked in to rehab in March for a month to seek help after he was reportedly led astray and started drinking and taking drugs at parties at his Hollywood Hills home.
She also publicly voiced her support for him at the time saying: "I love and support Cory and will stand by him through this. I am grateful and proud he made this decision."
Cory, who first went to rehab when he was 19, made his first red carpet appearance alongside Lea since completing his treatment in April at the 12th annual Chrysalis Butterfly Ball in Los Angeles last month, where she told reporters, "I think he looks great, doesn't he? He's the best."
Cory Monteith found dead at a Vancouver hotel
Canadian actor Cory Monteith, one of the stars of the hit American high-school TV show Glee, has been found dead at a Vancouver hotel.
Mr Monteith, 31, was found dead at the Fairmont Pacific Rim hotel just after noon on Saturday, after he failed to check out.
Police said there were no signs of foul play and the cause of death was not immediately apparent.
Mr Monteith, who had played front man and heart throb Finn Hudson since the hit show began in 2009, had been treated for drug addiction, and had a history of substance-abuse.
In April, a representative for Monteith, whose "Glee" character Finn was a high school football player turned enthusiastic glee club - or musical group - singer, said the actor was at a rehabilitation facility for an unspecified substance addiction.
Monteith had checked into the Fairmont Pacific Rim Hotel on July 6, and was due to check out on Saturday, Vancouver Police Department acting chief Doug LePard told reporters.
Others were in the hotel room with Monteith on Friday night, but evidence including his fob key entries indicate he returned to his room by himself early on Saturday and was alone when he died, police said.
LePard said he wanted to offer condolences "to the family, friends, castmates and millions of fans of Mr. Monteith".
Montieth's spokeswoman, Melissa Kates, said in a statement, "We are so saddened to confirm that the reports on the death of Cory Monteith are accurate."
Coroner Lisa Lapointe said: "We do not have a great deal of information as to cause of death."
An autopsy on Monteith was set for Monday, police said.
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