Investigators sought to determine the cause of a fiery crash that killed 'Fast & Furious' star Paul Walker while the 40-year-old actor's fans erected a makeshift memorial on Sunday near where the Porsche he was riding in smashed into a light pole and tree.
The Los Angeles County Sheriff's Department said speed was a factor in Saturday's one-car crash, though it will take time to determine how fast the car was going.
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 car when the two drove away in a 2005 red Porsche Carrera GT from a fundraiser in the community of Valencia, about 30 miles (50 kilometers) 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, 40, gathered to leave flowers, candles and memorabilia from the action movies.
Walker is 'gone but he'll never be forgotten because there are so many people that look up to him,' Joel Perez, 23, told the Los Angeles Times at the memorial.
Sheriff's deputy Peter Gomez said investigators are working to determine how fast the car was traveling and what caused it to go out of control, including whether the driver was distracted or something in the road prompted him to swerve.
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 (72 kph).
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.
Universal Pictures has not said what it plans to do with 'Fast & Furious 7,' which currently is slated for release in July.
Walker and Rodas had attended a fundraiser benefiting victims of the recent typhoon in the Philippines. The event was