UPDATE: State Police report suspect turned himself in this morning.
State Police report a woman in her early 50s suffered fatal injuries in a hit-and-run crash around 8 p.m. on Mystic Avenue, near McGrath Highway and the Stop & Shop.
State Police say the driver of what might be a Mercedes continued driving south after hitting the woman, who was in a crosswalk. The woman was transported to Mass. General, where she died, police say.
The vehicle most likely has front-end damage, probably on the passenger side.