The 19-year-old is set to appear at Livingston Sheriff Court on Monday.
George Stewart, 34, of West Calder, and a 15-year-old Whitburn boy, who cannot be named for legal reasons, have already appeared at Livingston Sheriff Court last Monday charged with murder.
They made no plea or declaration.
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Hide AdStewart was remanded in custody and the teenage boy was remanded to secure accommodation.