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.
The trooper was unharmed and police said none of the other victims' injuries were believed to be life threatening.