FOSS, Okla. (AP) -- An Oklahoma sheriff says investigators are confident that one of two cars pulled from the bottom of an Oklahoma lake contained the remains of three teenagers who went missing in 1970.

But Custer County Sheriff Bruce Peoples told The Associated Press on Wednesday that investigators are still trying to determine whose remains were in the other car pulled from Foss Lake.

He believes the second car may be linked to the 1969 disappearance of three people in an early-model Chevrolet like the one recovered Tuesday. Initially, he had said the earlier disappearance occurred in the late 1950s or early 1960s.

The state medical examiner's office said Wednesday it believes the remains of six people were recovered. The Highway Patrol says three skulls had been recovered as of Tuesday evening.

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