CHELSEA (CBS) – A man is in critical condition after getting hit by a Bolt bus on Route 16 in Chelsea overnight.

It happened just after midnight on the westbound side at Washington Avenue.

Police say the unidentified victim, a 50-year-old man from Chelsea, was taken to Massachusetts General Hospital with potential life-threatening injuries.

State police closed down that section of Route 16 after the accident.

The bus was operated by a Brockton man. Police say no charges have been filed at this point in their investigation.