Friends & Colleagues React to Death of Cory Monteith

Following yesterday's tragic news that Glee star Cory Monteith died in Vancouver at the age of 31, his friends, Glee co-stars and more took to Twitter to express their condolences, heartbreak, and shock.

Monteith passed away at Vancouver's Fairmont Pacific Rim hotel, police later confirmed in a press conference, however, no official cause of death has yet been publicly revealed.

Monteith, who was dating his Glee co-star and Broadway vet Lea Michele, starred in the film "Monte Carlo," opposite Leighton Meester, Selena Gomez and Katie Cassidy. His other film credits include "Final Destination 3," "The Invisible," "Deck the Halls" and "Whisper." He left rehab in April of 2013, after voluntarily admitting himself to a treatment facility for substance addiction in March of 2013.

His television credits include a lead role on the series "Kaya" and a recurring guest-star role on "Kyle XY." He has also made numerous guest appearances on television shows, including "Smallville," "Supernatural," "Stargate," "Flash Gordon" and "Interns." Additionally, he starred in the 2007 television movie "Hybrid."

Born in Calgary, Alberta, Canada, Monteith moved to Vancouver Island at a very young age. Throughout his life he has held jobs as a Wal-Mart greeter, a school bus driver, a roofer and a cab driver, before pursuing a career in acting.

Upon the conclusion of the press conference, Monteith's co-stars, including Mark Salling, Dot-Marie Jones, Kristin Chenoweth, and more releasd statements via Twitter. Keep reading for their reactions.

Mark Salling: "no."

Kristin Chenoweth: "RIP Cory Montieth. You will be loved. Always."

Dot-Marie Jones: "I have no words! My heart is broken. Cory was not only a hell of a friend, he was one amazing man that I will hold close to my heart forever....I am blessed to have worked with him, and love him so much! My heart is with his family and our whole "Glee" family! I love you all!"

Damin McGinty: "The guy I shot my first acting scene with. The nicest guy I've met. Can't believe it."

Lauren Potter: "I am totally heartbroken right now. I love Cory so much this hurts my heart...Cory was always so nice to me. I have so many good memories."

Nolan Gerard Funk: "Oh my God. Cory. Man. I can't. Praying for you man. You were a good soul...Thanks for always being kind Cory. You came a long way from hanging on the beaches in vancouver with the gang pre Glee. Sending you love bud."

Josh Sussman: "I am so saddened to hear about Cory. He was such a great guy/Super-kind &warm. A tragic loss. My heart goes out to all his friends & family."

Iqbal Theba: "Oh my god! No Cory..."

Adam Shankman: "Goodbye my amazing and beautiful friend. The lights in my world just grew dimmer. The world just lost one of our best. I love u so much...I will always cherish you in my heart. Thank you for so many wonderful days. I love you CM..."

Taylor Swift: "Speechless. And for the worst reason."

Nina Dobrev: "I'm gutted. Shocked and saddened to hear the news, my heart goes out to Cory's family and friends. Let's respect their space as they grieve."

Neil Patrick Harris: "How sad to read about Cory Monteith passing away. What a shame. He was a lovely, kind, talented guy and will be missed."

Ricky Martin: "I just heard the news.This is so sad. My heart goes out to his family & friends, specially Lea [Michele]. Rest in peace Cory."

Alyssa Milano: "Beautiful man! Why did you leave us so soon? Rest with the angels, Cory Monteith. "

Kaley Cuoco: "Cory Monteith, no words. Prayers. Thoughts w/ his family. This is terrible. Can't speak."

Sophia Bush: "I saw him a few weeks ago in NY, looking so happy. Heartbreaking..."

Zooey Deschanel: "This is such sad news about Cory Monteith - what an absolutely tragic loss of a very talented young man."

Holly Marie Combs: "Life is hard. Be nice. For you never know what another could be struggling with or against. You never know. #RIPCoryMonteith"

Scott Porter: "This news of Cory Monteith's death just shakes me to my very core. So young. My thoughts and prayers to his family and friends."

Mario Lopez: "RIP Cory Monteith...Such a nice guy, very down to earth. Incredibly sad. #TooYoungToDie"

Kim Kardashian: "Just heard about the death of Cory Monteith. So sad. Prayers 4 his family. Praying 4 Lea too! Words can't describe what they must be feeling."

Joel McHale: "Way too soon. A very nice & good guy."

Lance Bass: "Devastated about the news of Cory Monteith - such an incredible guy - my thoughts are with his family and friends."

Marlee Matlin: "My thoughts & prayers are with family and friends as well as cast of Glee on passing of Cory Monteith. A young talent gone too soon."

Nick Zano: "ALL of our lives are precious & can be gone in a flash, live better, smarter & show true appreciation for the now. Sad day. #RIPCoryMonteith"

Kat Dennings: "I can't fully process this news. Tragic, tragic loss of a young, promising, talented man. Cory Monteith, rest in peace."

Katie Cassidy: "So sad to lose a dear friend & talented man...Cory Monteith, you'll always be remembered."

Rihanna: "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!"

Photo Credit: Tommy Garcia, FOX