All lanes were shut down on Interstate 495 south after a major crash involving a police cruiser around 11:30 p.m. on Wednesday in Franklin, Massachusetts.
According to Massachusetts State Police, three people were injured in the 4-car accident.
According to police, a trooper was on scene for a vehicle removal when his cruiser was struck from behind. The vehicle that struck the cruiser then caught fire.
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The trooper was unharmed and police said none of the other victims' injuries were believed to be life threatening.