A 52-year-old Cohasset woman died Monday night after being struck by a vehicle driving through the Union Street Rotary in Braintree.
Lydia Drew was found barefoot lying on the southbound side of the rotary 75 yards from the Route 3 South on-ramp at approximately 8:30 p.m. when Braintree officers responded to several 911 calls, Chief Russell Jenkins said in a statement.
The driver, a 51-year-old Pembroke man, told police that "he had just left the MBTA parking garage and was getting ready to merge with rotary traffic when he felt his truck “run over something," Jenkins said. "The operator exited his motor vehicle and observed that he had stuck a person."
Jenkins said alcohol does not appear to be a factor in the crash and the driver was not cited.
Drew was pronounced dead at 9:05 p.m. at South Shore Hospital. She had earlier in the day left a health care facility against medical advice, Jenkins said. An unspecified South Shore police department broadcast an alert to area departments at 5:12 p.m. Monday.
The victim was being treated because she had threatened to harm herself, Jenkins said.
The accident remains under investigation. The driver told police that he did not see Drew before exiting his vehicle, which sustained no damage.