Lea Michele has appealed for privacy following the death of her Glee co-star and real-life boyfriend Cory Monteith.

The heartthrob actor, who played Finn Hudson in the hit TV series, was found dead of undisclosed causes in a room at a Vancouver hotel at the weekend. He was 31.

A representative for Lea, who had been dating Cory for over a year, said: "We ask that everyone kindly respect Lea's privacy during this devastating time."

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Cory Monteith and Lea Michele in June at the 12th Annual Chrysalis Butterfly Ball

Canadian-born Cory was found dead around noon on Saturday in his room on the 21st floor of the Fairmont Pacific Rim Hotel on Vancouver's waterfront, according to police. His body was found by hotel staff who entered his room after he missed his check-out time, acting Vancouver Police Chief Doug LePard said. Cory had checked into the hotel on July 6.

"We do not have a great deal of information as to cause of death," said British Columbia Chief Coroner Lisa Lapointe.

LePard said the star had been out with people earlier and that those people are being interviewed. Video and electronic records from the hotel indicate Cory returned to his room by himself early Saturday morning, and he was believed to be alone when he died. Lapointe said he had been dead for several hours when his body was found.

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Kevin McHale, Lea Michele, Cory Monteith and Jenna Ushkowitz 'Glee Live' on tour at Radio City Music Hall in 2010

An autopsy is expected to take place to determine the cause of death. LePard said there was no indication of foul play.

Several Glee stars have taken to Twitter to express their sadness.

Mark Salling, who plays Puck, said he was "going through a million memories and emotions". Lauren Potter, who plays Becky Jackson, the cheerleader with Down Syndrome, tweeted that she feels "totally heartbroken right now". "I love Cory so much this hurts my heart," she wrote.

Cory and Lea perform 'We've Got Tonight' on Glee:

Matthew Morrison, who plays glee club coach Will Schuester, expressed his condolences before performing at a show at the cabaret 54 Below in New York, according to the New York Times. Matthew changed his opening number to sing an a cappella rendition of What I Did For Love from the musical A Chorus Line, which was featured during the second season of Glee. "You guys came to see a show, I came to perform a show, so that's what we'll do," he said. "And we'll do it in Cory's honour."

Fox and the producers of Glee, including 20th Century Fox Television, called Cory an exceptional performer "and an even more exceptional person", adding: "He was a true joy to work with and we will all miss him tremendously."

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  • 12th Annual Chrysalis Butterfly Ball

    LOS ANGELES, CA - JUNE 08: Actor Cory Monteith attends the 12th annual Chrysalis Butterfly Ball on June 8, 2013 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic)

  • 12th Annual Chrysalis Butterfly Ball

    LOS ANGELES, CA - JUNE 08: Actor Cory Monteith and actress Lea Michele attend the 12th annual Chrysalis Butterfly Ball on June 8, 2013 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic)

  • 12th Annual Chrysalis Butterfly Ball - Inside

    LOS ANGELES, CA - JUNE 08: Actors Cory Monteith(L) and Lea Michele attend the 12th Annual Chrysalis Butterfly Ball on June 8, 2013 in Los Angeles, California. (Photo by Michael Buckner/Getty Images for Chrysalis)

  • FOX's "Glee" - Season Four

    GLEE: (L-R) Cory Monteith as 'Finn' and Lea Michele as 'Rachel' in the 'Sweet Dreams' episode of GLEE airing Thursday, April 18, 2013 (9:00-10:00 PM ET/PT) on FOX. (Photo by FOX via Getty Images)

  • FOX's "Glee" - Season Four

    GLEE: (L-R) Kevin McHale, Chris Colfer, Jenna Ushkowitz, Amber Riley, Cory Monteith and Lea Michele in the 'Sweet Dreams' episode of GLEE airing Thursday, April 18, 2013 (9:00-10:00 PM ET/PT) on FOX. (Photo by FOX via Getty Images)

  • FOX's "Glee" - Season Four

    GLEE: (L-R) Cory Monteith as 'Finn' and Mark Salling as 'Puck' in the 'Sweet Dreams' episode of GLEE airing Thursday, April 18, 2013 (9:00-10:00 PM ET/PT) on FOX. (Photo by FOX via Getty Images)

  • Nickelodeon's 26th Annual Kids' Choice Awards - Show

    LOS ANGELES, CA - MARCH 23: Actor Cory Monteith and Olympic gymnast Gabby Douglas speak onstage during Nickelodeon's 26th Annual Kids' Choice Awards at USC Galen Center on March 23, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images for KCA)

  • Nickelodeon's 26th Annual Kids' Choice Awards - Show

    LOS ANGELES, CA - MARCH 23: Actor Cory Monteith (L) and Olympic gymnast Gabby Douglas perform during Nickelodeon's 26th Annual Kids' Choice Awards at USC Galen Center on March 23, 2013 in Los Angeles, California. (Photo by Lester Cohen/WireImage)

  • Nickelodeon's 26th Annual Kids' Choice Awards - Show

    LOS ANGELES, CA - MARCH 23: Actor Cory Monteith (L) and Olympic gymnast Gabby Douglas perform during Nickelodeon's 26th Annual Kids' Choice Awards at USC Galen Center on March 23, 2013 in Los Angeles, California. (Photo by Lester Cohen/WireImage)

  • Nickelodeon's 26th Annual Kids' Choice Awards - Show

    LOS ANGELES, CA - MARCH 23: Actor Cory Monteith and Olympic gymnast Gabby Douglas speak onstage during Nickelodeon's 26th Annual Kids' Choice Awards at USC Galen Center on March 23, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images for KCA)

  • Celebrities At The Los Angeles Kings Game

    LOS ANGELES, CA - MARCH 23: Cory Monteith (L) and Lea Michele attend a hockey game between the Vancouver Canucks and the Los Angeles Kings at Staples Center on March 23, 2013 in Los Angeles, California. (Photo by Noel Vasquez/Getty Images)

  • Celebrities At The Los Angeles Kings Game

    LOS ANGELES, CA - MARCH 23: Cory Monteith (L) and Lea Michele attend a hockey game between the Vancouver Canucks and the Los Angeles Kings at Staples Center on March 23, 2013 in Los Angeles, California. (Photo by Noel Vasquez/Getty Images)

  • PaleyFest Icon Award 2013

    BEVERLY HILLS, CA - FEBRUARY 27: Actor Cory Monteith attends the PaleyFest Icon Award presentation at The Paley Center for Media on February 27, 2013 in Beverly Hills, California. (Photo by Jason LaVeris/FilmMagic)

  • PaleyFest Icon Award 2013

    BEVERLY HILLS, CA - FEBRUARY 27: Actor Cory Monteith attends the PaleyFest Icon Award presentation at The Paley Center for Media on February 27, 2013 in Beverly Hills, California. (Photo by Jason LaVeris/FilmMagic)

  • PaleyFest Icon Award 2013

    BEVERLY HILLS, CA - FEBRUARY 27: Actor Cory Monteith and actress Lea Michele attend the PaleyFest Icon Award presentation at The Paley Center for Media on February 27, 2013 in Beverly Hills, California. (Photo by Jason LaVeris/FilmMagic)

  • 19th Annual Screen Actors Guild Awards - Arrivals

    LOS ANGELES, CA - JANUARY 27: Actors Lea Michele and Cory Monteith arrive at the 19th Annual Screen Actors Guild Awards at The Shrine Auditorium on January 27, 2013 in Los Angeles, California. (Photo by Gregg DeGuire/WireImage)

  • 19th Annual Screen Actors Guild Awards - Arrivals

    LOS ANGELES, CA - JANUARY 27: Actor Cory Monteith arrives for the 19th Annual Screen Actors Guild Awards - Arrivals held at The Shrine Auditorium on January 27, 2013 in Los Angeles, California. (Photo by Albert L. Ortega/Getty Images)

  • 19th Annual Screen Actors Guild Awards - Arrivals

    LOS ANGELES, CA - JANUARY 27: Actor Cory Monteith attends the 19th Annual Screen Actors Guild Awards at The Shrine Auditorium on January 27, 2013 in Los Angeles, California. (Photo by Imeh Akpanudosen/Getty Images)

  • 18th Annual Critics' Choice Movie Awards - Arrivals

    SANTA MONICA, CA - JANUARY 10: Actor Cory Monteith attends the 18th Annual Critic's Choice Movie Awards held at Barker Hangar on January 10, 2013 in Santa Monica, California. (Photo by Jennifer Graylock/FilmMagic)

  • Champagne Nicolas Feuillatte at the Critics' Choice Movie Awards 2013

    SANTA MONICA, CA - JANUARY 10: Actor Cory Monteith attends the Critics' Choice Movie Awards 2013 with Champagne Nicolas Feuillatte at Barkar Hangar on January 10, 2013 in Santa Monica, California. (Photo by Tiffany Rose/WireImage)

  • 18th Annual Critics' Choice Movie Awards - Show

    SANTA MONICA, CA - JANUARY 10: Actors Cory Monteith (L) and Emmy Rossum present Co-Producer Stefan Arndt the Best Foreign Language Film Award for 'Amour' onstage at the 18th Annual Critics' Choice Movie Awards held at Barker Hangar on January 10, 2013 in Santa Monica, California. (Photo by Kevin Winter/Getty Images)

  • 18th Annual Critics' Choice Movie Awards - Show

    SANTA MONICA, CA - JANUARY 10: Presenters Cory Monteith (L) and Emmy Rossum speak onstage at the 18th Annual Critics' Choice Movie Awards held at Barker Hangar on January 10, 2013 in Santa Monica, California. (Photo by Kevin Winter/Getty Images)

  • 18th Annual Critics' Choice Movie Awards - Red Carpet

    SANTA MONICA, CA - JANUARY 10: Actor Cory Monteith attends the 18th Annual Critics' Choice Movie Awards at Barker Hangar on January 10, 2013 in Santa Monica, California. (Photo by Jeff Kravitz/FilmMagic)

  • GQ Men Of The Year Party - Arrivals

    LOS ANGELES, CA - NOVEMBER 13: Actor Cory Monteith arrives at the GQ Men of the Year Party at Chateau Marmont on November 13, 2012 in Los Angeles, California. (Photo by Alberto E. Rodriguez/Getty Images)

  • GQ Men Of The Year Party - Arrivals

    LOS ANGELES, CA - NOVEMBER 13: Actor Cory Monteith arrives at the GQ Men of the Year Party at Chateau Marmont on November 13, 2012 in Los Angeles, California. (Photo by Alberto E. Rodriguez/Getty Images)

  • FOX's "Glee" - Season Four

    GLEE: Actor Cory Monteith as 'Finn' on Season Four of GLEE airing on Thursdays (9:00-10:00 PM ET/PT) on FOX. (Photo by FOX via Getty Images)

  • DoSomething.org And VH1's 2012 Do Something Awards - Red Carpet

    SANTA MONICA, CA - AUGUST 19: Actors Cory Monteith and Lea Michele arrive at the 2012 Do Something Awards at Barker Hangar on August 19, 2012 in Santa Monica, California (Photo by Mark Davis/WireImage)

  • Premiere Screening Of FX's "American Horror Story: Asylum" - Arrivals

    HOLLYWOOD, CA - OCTOBER 13: Actors Cory Monteith and actress Lea Michele arrive at the Premiere Screening of FX's 'American Horror Story: Asylum' at the Paramount Theatre on October 13, 2012 in Hollywood, California. (Photo by Frazer Harrison/Getty Images)

  • DoSomething.org And VH1's 2012 Do Something Awards - Show

    SANTA MONICA, CA - AUGUST 19: Cory Monteith accepts award onstage at VH1's 2012 Do Something Awards held at Barker Hangar on August 19, 2012 in Santa Monica, California. (Photo by Michael Tran/FilmMagic)

  • DoSomething.org And VH1's 2012 Do Something Awards - Show

    SANTA MONICA, CA - AUGUST 19: Cory Monteith accepts award onstage at VH1's 2012 Do Something Awards held at Barker Hangar on August 19, 2012 in Santa Monica, California. (Photo by Michael Tran/FilmMagic)

  • Celebrity Sightings In New York City - August 12, 2012

    NEW YORK, NY - AUGUST 12: Lea Michele and Cory Monteith filming 'Glee' on the Streets of Manhattan on August 12, 2012 in New York City. (Photo by Aby Baker/Getty Images)

  • 2012 Do Something Awards - Arrivals

    SANTA MONICA, CA - AUGUST 19: Actors Cory Monteith and Lea Michele arrive at the 2012 Do Something Awards at Barker Hangar on August 19, 2012 in Santa Monica, California. (Photo by Jason Merritt/Getty Images)

  • FOX's "Glee" - Season Four

    GLEE: Actor Cory Monteith during a gallery portrait session for FOX's 'Glee' Season 4. Show airs Thursdays, 9:00-10:00 PM ET/PT. (Photo by FOX via Getty Images)

  • FOX's "Glee" - Season Four

    GLEE: Actor Cory Monteith during a gallery portrait session for FOX's 'Glee' Season 4. Show airs Thursdays, 9:00-10:00 PM ET/PT. (Photo by FOX via Getty Images)

  • "GLEE" Press Room - Comic-Con International 2012

    SAN DIEGO, CA - JULY 14: Actor Cory Monteith attends the 'GLEE' Press Room during Comic-Con International 2012 held at the Hilton San Diego Bayfront Hotel on July 14, 2012 in San Diego, California. (Photo by Frazer Harrison/Getty Images)

  • FOX's "Glee" - Season Four

    GLEE: (L-R) The cast of 'Glee,' Harry Shum Jr., Jenna Ushkowitz, Mark Salling, Heather Morris, Chord Overstreet, Amber Riley, Melissa Benoist, Jacob Artist, Kevin McHale, Jane Lynch, Matthew Morrison, Darren Criss, Becca Tobin, Chris Colfer, Naya Rivera, Cory Monteith, Lea Michele and Dean Geyeron on Season Four of GLEE airing on Thursdays (9:00-10:00 PM ET/PT) on FOX. (Photo by FOX via Getty Images)

  • 2012 NHL Awards - Show

    LAS VEGAS, NV - JUNE 20: Actor Cory Monteith addresses the audience during the 2012 NHL Awards at the Encore Theater at the Wynn Las Vegas on June 20, 2012 in Las Vegas, Nevada. (Photo by Jeff Vinnick/NHLI via Getty Images)

  • 2012 NHL Awards - Show

    LAS VEGAS, NV - JUNE 20: Actor Cory Monteith addresses the audience during the 2012 NHL Awards at the Encore Theater at the Wynn Las Vegas on June 20, 2012 in Las Vegas, Nevada. (Photo by Jeff Vinnick/NHLI via Getty Images)

  • 2012 NHL Awards - Show

    LAS VEGAS, NV - JUNE 20: Actor Cory Monteith presents an award during the 2012 NHL Awards at the Encore Theater at the Wynn Las Vegas on June 20, 2012 in Las Vegas, Nevada. (Photo by Isaac Brekken/Getty Images)

  • "Schiaparelli And Prada: Impossible Conversations" Costume Institute Gala

    NEW YORK, NY - MAY 07: Cory Monteith attends the 'Schiaparelli And Prada: Impossible Conversations' Costume Institute Gala at the Metropolitan Museum of Art on May 7, 2012 in New York City. (Photo by Kevin Mazur/WireImage)

  • Fox 2012 Programming Presentation Post-Show Party

    NEW YORK, NY - MAY 14: Cory Monteith attends the Fox 2012 Programming Presentation Post-Show Party at Wollman Rink - Central Park on May 14, 2012 in New York City. (Photo by D Dipasupil/FilmMagic)

  • TV Academy Special Screening Of "GLEE"

    NORTH HOLLYWOOD, CA - MAY 01: Cory Monteith attends TV Academy's special screening of 'GLEE' at Leonard H. Goldenson Theatre on May 1, 2012 in North Hollywood, California. (Photo by Steve Granitz/WireImage)

  • 69th Annual Golden Globe Awards - Arrivals

    69th ANNUAL GOLDEN GLOBE AWARDS -- Pictured: (l-r) Cory Monteith arrive at the 69th Annual Golden Globe Awards held at the Beverly Hilton Hotel on January 15, 2012 -- Photo by: Vince Bucci/NBC/NBCU Photo Bank

  • Inside the Actors Studio - Season 18

    INSIDE THE ACTORS STUDIOS -- 'The Cast of Glee' -- Pictured: Cory Monteith -- (Photo by: Anthony Behar/Bravo/NBCU Photo Bank via Getty Images)

  • Inside the Actors Studio - Season 18

    INSIDE THE ACTORS STUDIOS -- 'The Cast of Glee' -- Pictured: (l-r) Cory Monteith, Jane Lynch, creator Ryan Murphy, Matthew Morrison, James Lipton, Lea Michele, Chris Colfer -- (Photo by: Anthony Behar/Bravo/NBCU Photo Bank via Getty Images)

  • 2010 Hollywood Style Awards

    WESTWOOD, CA- DECEMBER 12: Cory Monteith arrives at the 2010 Hollywood Style Awards at the Billy Wilder Theater at the Hammer Museum on December 12, 2010 in Westwood, California. (Photo by Gregg DeGuire/FilmMagic)

  • Edmonton Oilers v Vancouver Canucks

    VANCOUVER, CANADA - DECEMBER 26: Cory Monteith, a Canadian actor from the television show 'Glee', jokes around with Vancouver Canucks mascot Fin before their game against the Edmonton Oilers at Rogers Arena on December 26, 2010 in Vancouver, British Columbia, Canada. (Photo by Jeff Vinnick/NHLI via Getty Images)

  • 2010 Hollywood Style Awards - Arrivals

    WESTWOOD, CA - DECEMBER 12: Actor Cory Monteith arrives at the 2010 Hollywood Style Awards at Billy Wilder Theater at The Hammer Museum on December 12, 2010 in Westwood, California. (Photo by Jon Kopaloff/FilmMagic)

  • GQ 2010 "Men Of The Year" Party - Arrivals

    LOS ANGELES, CA - NOVEMBER 17: Actor Cory Monteith arrives at the GQ 2010 'Men of the Year' held at Chateau Marmont on November 17, 2010 in Los Angeles, California. (Photo by Steve Granitz/WireImage)

  • 25th Annual Gemini Awards Gala

    Host/actor Cory Monteith attends the 25th Annual Gemini Awards Gala at the Winter Garden Theatre on November 13, 2010 in Toronto, Canada. (Photo by George Pimentel/WireImage)

  • TV Guide Magazine's 2010 Hot List Party

    HOLLYWOOD, CA - NOVEMBER 7: Cory Monteith arrives at TV Guide Magazine's 2010 Hot List Party at Drai's at the W Hollywood Hotel on November 8, 2010 in Hollywood, California. (Photo by Gregg DeGuire/FilmMagic)

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