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SANTA CLARITA, Calif. (AP) - For many people, it's a day to honor the late actor Paul Walker and mourn his death.

The sounds of high-performance car engines filled the air today as thousands of fans, friends and car enthusiasts headed to the Los Angeles suburb of Santa Clarita to pay tribute to Walker at the site where the "Fast & Furious" actor died in a car crash.

The memorial, planned through social media, was scheduled to begin at noon, but mourners began arriving hours beforehand to leave flowers, candles, stuffed animals and other tributes. Throughout the afternoon, thousands of people, including entire families, dropped by.

Many arrived in cars built for speed, and the sounds of engines revving echoed close to where Walker and his friend died on Nov. 30. The event is expected to conclude this evening with a cruise through the area 30 miles northwest of downtown Los Angeles.

Walker, who was 40, died when the Porsche Carrera GT he was riding in smashed into a light pole and tree and then burst into flames. The actor's friend and financial adviser, Roger Rodas, who was driving, also was killed. Authorities say speed was a factor in the crash.

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