State Police report a Dorchester man suffered serious injuries yesterday when a woman from Quincy hit and drove over him as they were both traveling around Neponset Circle around 4:30 p.m. Thursday.

The victim, 46, was taken to Boston Medical Center with serious injuries. The driver, a 53-year-old woman in a Subaru, was uninjured.

"The cause of this crash remains under investigation. No charges have been filed at this time," State Police say.