A Chelsea man was killed in a hit-and-run accident while crossing Route 16 in Chelsea early yesterday, and a few hours later in a separate accident, a Randolph man was seriously injured when he was ejected from a pickup truck during a rollover on Interstate 93 in Braintree, State Police said.
Police said they had not determined what factors, including weather, contributed to either traffic event.
In Chelsea, the 39-year-old pedestrian, whose identity was being withheld until his family could be notified, was struck by an unknown vehicle on the westbound side of Route 16.
Police responded about 12:30 a.m., officials said.
The man was taken to Massachusetts General Hospital, where he died.
Westbound Route 16 was closed in the area of Washington Avenue as police investigated until about 2:15 a.m., when the scene was cleared, said State Police.
No further information was available last night.
Anyone with information about the crash is urged to contact the State Police Revere barracks at 781-284-0038, police said.
Three hours after the pedestrian was hit in Chelsea, a 30-year-old Randolph man suffered life-threatening injuries in an accident on I-93 southbound in Braintree, State Police said.
Tuan Anh Le was taken to Boston Medical Center after the 2008 Nissan Titan he was driving rolled over near Exit 6 to Route 37, also called Granite Street, officials said.
Police responded to the one-vehicle accident about 3:30 a.m.
The rollover remains under investigation. The roadway’s breakdown and right travel lanes were closed until about 4:30 a.m. when police cleared the scene.
Le was also taken to Mass. General, where hospital officials said his condition was serious.
No further information was immediately available, police said.