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Death of Mountlake Terrace’s Cheryl DeBoer was suicide, medical examiner rules
MOUNTLAKE TERRACE – Cheryl DeBoer, the Mountlake Terrace who was found dead in a culvert with a plastic bag over her head, committed suicide, the Snohomish County Medical Examiner’s officer ruled. The medical examiner had already ruled in March that the cause of death was asphyxia and freshwater drowning, but didn’t rule on the manner of death until Monday.