DEDHAM ( AP) — Police say the cause of a head- on crash in Dedham last month that claimed the life of a Massachusetts man remains a mystery and may never be known.

Dallas Whatley of Taunton, Mass., was killed in the Dec. 20 collision when his car crossed the center line of Route 1A near Dedham Town Office and hit a pickup.

The 39- year- old Whatley was visiting friends in the area and died at the scene. The pickup’s driver suffered a leg injury.

Police tell the Bangor Daily News that they have ruled out cellphone use as a cause and do not believe alcohol was involved.

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