On Saturday Hollywood actor Paul Walker's untimely demise has left the entire world in shock. At the age of 40, the "Fast & Furious" actor is killed in a car accident and blast in Southern California, his representative confirmed to Us Weekly.

Instantaneously following the heart-rending news, celebrities swarmed on social media to convey their prayers and messages among those who expressed grief over Walker's unfortunate and untimely demise were his "Fast and the Furious" co-star Ludacris, his 1999 "She's All That" co-star Gabrielle Union, and his 2000 "Skulls" co-star Joshua Jackson and many more. Here we have compiled a list of the heart aching celebrity reactions:

Tyrese, co-star of Walker in the hit franchise series, posted a picture of the two on set with the following message: "My heart is hurting so bad no one can make me believe this is real Father God I pray that you send clarity over this cause I just don't understand My heart hurts it's broken no one can convince me that this is real.... Prayer warriors please pray real hard for his only child, his daughter and family... #HeartOfAnAngel13YrsFamilyForeverWeJustCelebreatedYour40thBirthday..... My God... My God... I can't believe I'm writing this."

Kat De Castro:

My friend lives near the spot where Paul Walker died. People have started placing candles there. pic.twitter.com/Z0u4b0R8N3

— Kat De Castro⭐♎ (@KatDeCastro) Dec. 1, 2013

Former world heavyweight boxing champion Lennox Lewis:

Strength and prayers go out BOTH families who lost their loved one in this tragic accident. #RIPPaulWalker — Lennox Lewis (@LennoxLewis) Dec. 1, 2013

Goldie Hawn:

It's with a heavy heart that we must confirm Paul Walker passed away today in a tragic car accident...MORE: http://t.co/9hDuJMH99M - #TeamPW

— Paul Walker (@RealPaulWalker) Dec. 1, 2013

Gabrielle Union: "There are no words... Someone pls say this is just another absurd internet hoax."

Ludacris: "Your humble spirit was felt from the start, wherever you blessed your presence you always left a mark, we were like brothers & our birthdays are only 1 day apart, now You will forever hold a place in all of our hearts @paulwalker legacy will live on forever. R.I.P."

Joshua Jackson: "Damn. Hard to imagine someone so full of life taken so soon. My thoughts go out to your family. RIP Pauly Walker."

Emmanuelle Chriqui: "Such a heavy heart about Paul Walker...my condolences to all his his family and friends. I heard from many what a beautiful soul he was."

Olivia Wilde: "Heavy heavy heart tonight. Paul Walker was a genuinely good, sweet, kind, laid back, loving person. Sending much love to his family."

Vanessa Lachey:" I just heard and am in shock. Prayers to Paul Walker's family. Life is precious; never take a day for granted."

Jay Sean: "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. "

Adam Carolla: "so sad about Paul Walker wish the best for his loved ones

Kat Dennings: "Paul Walker???? Oh my god. This is heartbreaking. "

Tyson Beckford: "RIP Paul Walker, loved working with you on "Into the Blue". I Will miss you. "

Tyler Shields: "Paul Walker was such a nice guy so sad he died but at least he died doing what he loved and he went out on top sorry to see him go!"

Jenna Ushkowitz: "My thoughts and love go out to Paul's friends and family."

Kevin Zegers: "Thoughts and prayers to Paul Walkers family and friends. Especially his young daughter."

Dominic Monaghan: "RealPaulWalker awful news. Paul was a lovely guy. Handsome as all hell and funny and cool to boot. Terrible news. My condolences."

Michael B. Jordan: "Man life is so short. People you care about can be here one min and gone the next Don't take life for granted RIP Paul Walker."

Scott Porter: "Immensely saddened by the loss of Paul Walker. An incredibly gentle and generous soul. Be safe out there folks. #RIPPaulWalker."

Chris Daughtry: "So I'm on a flight and just see that Paul Walker died in a car crash...so very sad! Wow! Stunned."

Jamie Chung: "So tragic. Prayers go out to Paul Walkers friends and family."

Kailyn Lowry: "Fast and Furious just won't be the same without Paul Walker."

Michelle Branch: "Sad to hear about Paul Walker. A friend of a friend was there & said he was at a charity car event raising money for the Philippines. Awful!"

Kevin McHale: "So sad to hear about Paul Walker. So young. Can't believe it."

Amber Riley: "My condolences to Paul Walker's family. Rest In Peace."

Christopher Gorham: "So saddened to hear about @RealPaulWalker 's passing. May he rest in peace."

Jack Osbourne: "RIP Paul Walker."

Brad Goreski: "My thoughts and prayers go out to @RealPaulWalker family. How sad. He was such a beauty on film. Those blue eyes will be missed."

Lance Bass: "So so sad about Paul Walker."

Mario Lopez: "RIP Paul Walker.. Eerie that the star of The Fast & The Furious died in a car accident.. God Bless his daughter."

Dave Annable: "Wow. I'm kind of in shock about the news on Paul Walker. So sad and tragic. Prayers out to friends and family."

Dane Cook: "RIP Paul Walker."

Kevin Hart: "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."

Anne V: "What unbelievably sad news. #RIPPaulWalker. My thoughts and prayers go to your loves ones."

Gabriel Macht: "Never met him...but sad to hear he's passed in a car accident. RIP Paul Walker...#tooyoung"

Watch: Paul Walker of "Fast & Furious" dies in fiery crash. (11/30/2013) #RIP Paul Walker

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R.I.P Paul Walker Dies "Fast & Furious" Dead at 40 [TRIBUTE 2013]

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