A 55-year-old woman was killed in a hit-and-run incident on Manpada bridge in Thane district of Maharashtra, the police officials said on Friday, adding that her son was injured in the accident and a search was on to trace the vehicle and its driver involved in the crash.

The incident took place on the route between Thane and Ghodbunder road on the Manpada bridge when a two-wheeler with a woman and man travelling on it was allegedly rammed by a yet to be identified vehicle, the police said.