A major crash shutting down I-495 North in Tewksbury Monday night.

Sky 7 HD flew over the scene, capturing ambulances, police, and first responders in the area. Two cars and a tractor trailer appear to be involved.

Traffic is at a standstill, and drivers are being asked to avoid the area.

No other details were immediately available.

This is a developing news story; stay with 7NEWS on-air and online for the latest details.

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