LOS ANGELES - JUNE 3: Actors Tyrese (L) and Paul Walker arrive at the premiere of '2 Fast 2 Furious' at the Universal Amphitheatre on June 3, 2003 in Los Angeles, California. (Photo by Kevin Winter/Getty Images) Photo by Kevin Winter/Getty Images

Celebs took to Twitter and Instagram yesterday when the tragic news broke that actor Paul Walker was killed in a car accident in Santa Clarita, Calif., on Saturday afternoon. He was 40 years old. 

The Fast & Furious actor was returning from a charity event in a friend's Porsche Carrera GT, when the vehicle hit a tree, CNN reports.

Tyrese, Ludacris and others expressed their shock.

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