Celebrities React to Paul Walker's Death

Many stars sent their condolences through Twitter

Paul Walker, the star of the "Fast & Furious" movie series, died Saturday at the age of 40. The actor was in a car crash that killed one other person north of Los Angeles, according to his publicist.

Authorities said speed was a factor in the crash, but its cause is still being investigated.

Shortly after the news broke, many celebrities took to social media to offer their condolences, including some who worked with Walker throughout his career.

"Brother I will miss you very much," actor Vin Diesel, Walker's costar in the "Fast & Furious" wrote on Instagram. "I am absolutely speechless. Heaven has gained a new Angel. Rest in Peace."

Here are other comments stars have made: