Hollywood actor Paul Walker has passed away at the age of 40. Best known for his work in the Fast & Furious franchise, the star was killed after a car collided with a tree and exploded in Southern California on Saturday afternoon (November 30, 2013), according to reports by various media.

The Santa Clarita Valley Sheriff’s Station confirms in a statement that there were two fatalities in a traffic collision approximately at 3:30 p.m. A statement on Walker’s death was also posted on his official Facebook page shortly after the news broke, “It is with a truly heavy heart that we must confirm that Paul Walker passed away today in a tragic car accident while attending a charity event for his organization Reach Out Worldwide. He was a passenger in a friend’s car, in which both lost their lives. We appreciate your patience as we too are stunned and saddened beyond belief by this news. Thank you for keeping his family and friends in your prayers during this very difficult time. We will do our best to keep you apprised on where to send condolences.”

Immediately following the news, messages started to pour in on Twitter. Among those who expressed grief over Walker’s death were his Fast and the Furious costar Ludacris, his 1999 She’s All That costar Gabrielle Union, Kat Dennings, Dominic Monaghan, and Kevin Hart. Here are a few reactions as listed by Us Weekly:

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.

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

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

Last footage of the actor caught by TMZ