Police believe son killed family members before shooting himself, multiple sources confirm

An email sent by the son three hours before the bodies were found in Issaquah, Mercer Island gave clues that his life was about to end.

MERCER ISLAND, Wash. — Police suspect 45-year-old Mackenzie “Mack” Williams was the shooter in all three of his family members’ deaths, before turning the gun on himself, multiple sources with direct knowledge of the events confirm to KING 5.

KING 5 has exclusive information that Williams, an unemployed computer professional, sent an email to friends just hours before the bodies were found — a message that appeared to foreshadow what was about to happen.

Three hours before

→ Continue reading at King 5

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