CHELSEA (CBS) – Eight people were taken to area hospitals after a crash involving a box truck and a bus.

The accident happened at Eastern and Central Avenues in Chelsea Thursday afternoon.

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Four of the victims were taken to Massachusetts General Hospital; four were taken to Whidden Hospital in Everett.

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The extent of injuries was not immediately known.

The Hazardous Materials crew was called to scene for fuel spill related to the crash.

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Police are investigating the cause of the crash.