The cause of actor Cory Monteith's death remained unclear Monday, and authorities in Canada said it could take several days before toxicology test results are in.
Vancouver police Sgt. Randy Fincham said there's nothing to indicate the "Glee" star's death was due to illicit drug use.
Monteith, 31, wasin his Vancouver, British Columbia, hotel room on Saturday, according to police, who have ruled out foul play.
Police said Monteith had been out with people earlier, but video and electronic records from the hotel indicated he returned to his room by himself early Saturday. He was believed to be alone when he died.
Monteith's passing recalls the lives of Heath Ledger, Corey Haim and River Phoenix -- actors who battled substance abuse and died in their 20s and 30s. Monteith talked bluntly about struggling with addiction since he was a teenager, calling it a serious problem andin 2011 he was "lucky to be alive."
Monteithin April for substance addiction and asked for privacy as he took steps toward recovery, a representative said at the time. Lea Michele, Monteith's "Glee" co-star and real-life girlfriend, told People magazine that she loved and supported him and was proud he was seeking help. It was not Monteith's first time in rehab. He also received treatment when he was 19.
The Fox network and the producers of "Glee," including 20th Century Fox Television, called Monteith an exceptional performer "and an even more exceptional person." Micheleupon hearing the news of his death.
Other cast members from the series have spoken out about Monteith. Naya Rivera, who plays Santana on the series, told The Hollywood Reporter that he was "a special part of this world and will forever be missed."
Mike O'Malley, who plays Burt Hummel (the stepfather of Monteith's character), told People: "Cory Monteith was a great guy; Funny, deep, thoughtful, and hardworking. In real life, he was the coolest dude, generous, and a great friend to his pals. As Finn Hudson, he did what so many actors strive to do: authentically portray human behavior in a specific, understated manner, thereby eliciting laughter and creating camaraderie with his audience. If an ability to show others kindness and fostering fellowship are two qualities that all humans should strive for, Cory mastered them long before he died. He deserved a long life. His death has rocked all of us at 'Glee.'"
Mark Salling and Harry Shum Jr., who play Puck and Mike Chang, were among those sharing tributes on Twitter:
going through a million memories and emotions today. ill love you always Brother Cory.-- Mark Salling (@MarkSalling) July 14, 2013
At this time, please send nothing but love and light. This tragic news still doesn't seem real to me. I love you Cory.-- Harry Shum Jr (@iharryshum) July 14, 2013
A makeshift memorial emerged outside the Vancouver hotel. #RipCoryMonteith and #StayStrongLea became trending topics on Twitter. In England, what was supposed to be a weekend celebration of "Glee"after news of Monteith's death rocked a fan convention.
"Glee," with its catchy song-and-dance numbers and high-profile guest stars like Gwyneth Paltrow and Britney Spears, became an instant hit when it debuted in 2009 and made celebrities of Montieth and the rest of the relatively unknown cast.
Monteith served as the show's resident hunk with a heart of gold. He played Finn Hudson, a football quarterback with two left feet who found more camaraderie in the choir room than on the football field. After his character graduated high school, Hudson sought out to find himself before settling on what he wanted to do with his life: become a teacher and mentor.