SAN FRANCISCO, Oct 2 (Reuters) - Crash site investigators found human remains in the wreckage of Steve Fossett's small plane on a remote California mountain, the head of the National Transportation Safety Board said on Thursday.

Mark Rosenker, acting chairman of the National Transportation Safety Board, told Reuters by telephone that search crews had found a "very small" amount of human remains amid the airplane's debris.

He declined to provide details, adding that local officials will be responsible for examining the remains.

"It will taken by the sheriff and the coroner and they will do the work," Rosenker said.

Earlier at a news conference he noted that a judge had declared Fossett dead. "Our job is to determine what happened on the mountain," he said.

(Reporting by Jim Christie; Editing by Peter Henderson and Eric Walsh)

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