Trooper was changing lanes at time of fatal collision on I-93, sources tell 5 Investigates - WCVB Boston

The Massachusetts State Police was trying to pull over to help a motorist in a disabled vehicle.

STONEHAM, Mass. —A tanker full of gasoline was in the right lane when it slammed into the passenger side of a Massachusetts State Police trooper's cruiser late Thursday, killing the trooper, 5 Invest… [+1614 chars]

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