- Actor Paul Walker died in a car crash Saturday
- Several in Hollywood were stunned by the news
- Stars took to social media to express their grief
(CNN) -- Paul Walker's sudden death has left many in Hollywood nearly too stunned to speak.
As the news of his death spread on Saturday, some celebrities, including Lady Gaga and Alyssa Milano, tweeted their disbelief.
No, @RealPaulWalker. No. No. No. Rest with the angels. You. Sweet boy. #beauty #love #RIP
— Alyssa Milano (@Alyssa_Milano) December 1, 2013
@Eric_lovegipson is this true? If so that is incredibly tragic. Praying for his family, friends, and fans. Wow. speechless
— Lady Gaga (@ladygaga) December 1, 2013
Adored for his work in the "Fast & Furious" movie franchise, Walker was in the midst of filming a seventh installment at the time of his death.
The 40-year-old actor, who rose to fame in 2001's "The Fast & The Furious" after appearing in '90s hits "She's All That" and "Varsity Blues," died in a car accident. He'd been attending a charity event for his organization, Reach Out Worldwide.
Throughout the industry, several who worked with Walker are mourning the loss of a great friend:
My heart is crushed by the news that my friend Paul Walker passed away today. Prayers and light to his daughter and family right now.
— Michael Ealy (@MichaelEaly) December 1, 2013
Paul was a truly good person in a town of questionable characters.
..A real life tragedy if there ever was one.
— Rachael Leigh Cook (@RachaelLCook) December 1, 2013
This is awful. Awful. #RIPPaulWalker pls pray for his family, friends & fans. We've lost a great, laid back, sweet, cool man & father
— Gabrielle Union (@itsgabrielleu) December 1, 2013
I'm a devastated right now. My prayers & condolences go out to Paul Walkers family & friends. He was a amazing talent & will truly b missed
— Kevin Hart (@KevinHart4real) December 1, 2013
Still more have been left sobered by the stunning tragedy:
What horrible news #PaulWalker prayers go out to his family. You just never know.... Cherish each breath, it's a gift
— LeAnn Rimes Cibrian (@leannrimes) December 1, 2013
#paulwalker - much love to paul walker. So sad. He gave a lot of joy. http://t.co/MVsZUMvx9T
— James Franco (@JamesFrancoTV) December 1, 2013
Shocked to hear @RealPaulWalker has passed away. SO SAD. R.I.P.
— Greg Grunberg (@greggrunberg) December 1, 2013
Oh man just read about Paul Walkers death. So young. Ugggh makes me sick especially when it's caused by an accident. God bless his soul.
— Jay Sean (@jaysean) December 1, 2013
Walker's next film, "Hours," is scheduled to be released on December 13.