The driver of a fuel tanker truck was killed on Saturday after he crashed into the median on Route 1 just outside Saugus, Mass., causing the fully-loaded tanker to explode, police said.
Police do not know why the driver, 59-year-old Neal Michaud, lost control of the tanker at 2 a.m. Saturday morning.
Six vehicles collided with the tanker truck during the crash, causing four people to be transported to area hospitals for treatment. One of the injured had to undergo emergency surgery for severe burns.
A number of other fires were sparked when fuel leaked from the tanker and pooled in nearby storm drains.
Police are currently investigating the cause of the crash.