Update 3:35 p.m.: New England Cable News is reporting that police confirm it was a fatal hit & run in Wellesley between car and bicyclist. NECN quotes police as saying the bicyclist was a Wellesley resident in his 40s.
Original story: Weston Road has been closed between Wellesley Square and Howe Street due to a "serious" motor vehicle accident, according to police.
Police are at the scene, where bicycle debris is clearly visible. According to Twitter reports, the incident may have been fatal, though police have yet to confirm.
Stephen Walsh contributed to this report.