Because Walker is so closely associated with the underground culture of street racing portrayed in the popular "Fast & Furious" film franchise, the fatal accident had an eerie quality — a tragic end for a Hollywood hero of speed.

The crash also killed Walker's friend and financial adviser Roger Rodas, according to Walker's publicist, Ame Van Iden. She said Walker was a passenger in the 2005 red Porsche Carrera GT when they drove away from a fundraiser in the community of Valencia, about 30 miles northwest of downtown Los Angeles.

Sheriff's deputies found the car engulfed in flames when they arrived at the site of the crash, near the fundraiser at Rodas' sport car dealership. Officials have not identified either person found in the car.

On Sunday, fans of Walker gathered to leave flowers, candles and memorabilia from the action movies. His "Fast & Furious" co-star Tyrese Gibson broke down when he visited the crash site.

"Paul is the heartbeat of this franchise and we're gonna see to it that his energy and presence lives on forever," Gibson later posted on his Instagram account. He also posted a video of the film cast and crew recently celebrating Walker's birthday. 

After the Porsche crashed into a light pole and tree, it burst into flames. The downed light pole had a speed limit sign of 45 mph. Walker rode the "Fast & Furious" franchise to fame, starring in all but one of the six action blockbusters, beginning with the first film in 2001. He had been on break from shooting the seventh installment; production began in September and while much of the film has been shot, it's incomplete.