A serious car crash has shut down Interstate 495 in Chelmsford, Massachusetts, on Tuesday, police said.
The crash went into the woods off the highway, which was shut down in both directions for a medical helicopter to respond to the scene, according to Massachusetts State Police.
A badly damaged crashed car was seen on the side of the highway.
The highway eventually reopened, but the investigation into what happened was continuing.
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It wasn't immediately clear what happened in the crash or how many people were hurt.
This is a developing news story that will be updated when more information is available.
