Sep 5, 2015 2:06 PM by News Staff
FULLERTON, Calif. (AP) - A 70-year-old convicted killer has pleaded guilty to murdering a friend in 1982 in Orange County.
The Riverside Press-Enterprise says David Campbell pleaded guilty on Friday and was sentenced to nine years to life in prison.
He's already serving a life term for two Riverside County killings.
Campbell was charged with killing 26-year-old Frank Marshall, who vanished in January of 1982 after heading out for a motorcycle ride. Campbell had been questioned about his disappearance but never arrested.
Authorities say Marshall had been living in Oregon and while visiting Fullerton asked Campbell about a mutual friend - not knowing that Campbell had killed him.
Hikers found part of Marshall's skull near Big Bear in 1985. Cold-case detectives took the case five years ago.
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