The world woke up to the sad news this morning of the untimely death of Cory Monteith.

The Glee star was only 31 years of age when he was found on Saturday in a Vancouver hotel room.

In the hours since, many well-known celebrities have taken to Twitter to express their sadness at the untimely death of the young star, including his co-star Dot Marie Jones, who plays coach Beiste on the hit show, and Kristen Chenoweth, who has a recurring guest spot on the musical TV drama.

#CoryMonteith no words. Prayers. Thoughts w his family. This is terrible. Can't speak.

— Kaley Cuoco (@KaleyCuoco) July 14, 2013

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

— Nina Dobrev (@ninadobrev) July 14, 2013

This is such sad news about @CoryMonteith - what an absolutely tragic loss of a very talented young man.

— zooey deschanel (@ZooeyDeschanel) July 14, 2013

Speechless. And for the worst reason.

— Taylor Swift (@taylorswift13) July 14, 2013

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

— Kat Dennings (@OfficialKat) July 14, 2013

I HAVE NO WORDS! MY HEART IS BROKEN CORY WAS NOT ONLY A HELL OF A FRIEND HE WAS ONE AMAZING MEN THAT I WILL HOLD CLOSE TO MY HEART FOREVER

— Dot-Marie Jones (@dotmariejones) July 14, 2013

I've never lost a friend this close. This feels like a mistake.

— Kevin Zegers (@KevinZegers) July 14, 2013

RIP CoryMontieth. You will be loved. Always.

— Kristin Chenoweth (@KChenoweth) July 14, 2013

Related: 

Glee Star Cory Monteith Found Dead, Aged 31

Fox Broadcasting Company & Glee Executives Release Statement following Cory Monteith's Death

Actress Lea Michele 'Devastated and Inconsolable' at Cory Monteith's Death