Anton Yelchin, best known for playing Chekov in the new "Star Trek" films, was killed in a car accident early Sunday, police and his publicist said.

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Yelchin, 27, was struck by his own car as it rolled backward down his driveway in Studio City, according to Los Angeles police Officer Jenny Hosier. The car pinned Yelchin against a brick mailbox pillar and a security fence.

Fans and celebrities immediately took to social media following the announcement of Yelchin's death to offer their condolences.