The actor was found dead at Vancouver's Fairmont Pacific Rim hotel Saturday. In a press conference, acting Vancouver Police Chief Doug LePard said that his body was found on Saturday in his room on the 21st floor of the hotel, and an ambulance service called police shortly after noon.
20th Century Fox TV and Fox network execs called Monteith "an exceptional talent and an even more exceptional person. He was a true joy to work with and we will all miss him tremendously."
LePard said that Monteith checked into the hotel on July 6 and was due to check out today.
"There were others with Mr. Monteith in his room earlier last night, but video and fob key entries show him returning to his room by himself in the early morning hours and we believe he was alone when he died," LePard said. "When he missed his check-out time, staff went to the room at noon and found his body."
He said police are investigating room access records as well as hotel video. He said that all indications are that there was no foul play. An autopsy is scheduled for Monday.
"I want to pass on our condolences to the family, friends, cast mates and millions of fans of Mr. Monteith," LePard said. "As was the case in countless homes, I watched 'Glee' regularly with my daughters, and I know there will be shock and sadness in many households with the news of his tragic death."
Monteith, a native of Canada, landed the role of high school jock Finn Hudson on "Glee" in 2009. The thesp's credits before his tenure on "Glee" included "Final Destination 3," "The Invisible," "Monte Carlo" and a recurring role on "Kyle XY," but it was his time on Fox's musical theater dramedy that proved to be the breakout role for Monteith's career.
Monteith has admitted to substance abuse issues in the past, and earlier this year completed a stint in rehab.
He has been romantically linked to "Glee" co-star Lea Michele.
Monteith is featured in two upcoming indie films, "All the Wrong Reasons" and "McCanick," both of which were shot last year. Neither appears to have a release date set.
Beyond "Glee," Monteith had not done much TV work beyond guest voice casting on "The Simpsons" and "Family Guy" episodes. He was also a guest on Oxygen's "The Glee Project" reality series tied to the Fox series.
On his Twitter profile, the actor billed himself as "tall, awkward, Canadian, actor, drummer, person." The last tweet sent by @corymonteith last tweet was sent Friday at 1:25 p.m., in reference to the social media phenom "Sharknado."
Fans on Saturday night quickly began retweeting that message and posting tributes.
oh. IT'S A SHARK TORNADO.--
Cory Monteith (@CoryMonteith) July 12, 2013