Two bodies were found by rescuers as massive search was on for the remaining missing passengers of two buses that were washed away early on Wednesday in flood waters after a bridge collapsed on the Mumbai-Goa Highway.
The identity of the victims was yet to be ascertained.
The search operation has been launched by the Maharashtra government, National Disaster Response Force, Indian Navy and Indian Coast Guard (ICG), police, fire brigade and local adventure groups to trace the missing passengers.
Maharashtra State Road Transport Corporation buses with 11 passengers on board each went missing and there was no contact with either their drivers or the passengers, Raigad Collector Sheetal Ugale said.
An aerial, terrestrial and maritime search was on to detect the missing buses apart from five to six vehicles that were reported to have been washed away in the floods to the Arabian Sea, around 18 km from the site.
Chief Minister Devendra Fadnavis was monitoring the situation, an official said.
Prime Minister Narendra Modi called up Fadnavis and offered help in the rescue operations, while Railway Minister Suresh Prabhu ordered deployment of railway medical teams and other assistance.
Indian Coast Guard has deployed three choppers while three specialised NDRF teams joined the police, fire brigade and naval divers in the search.
Of two buses, the Jaigad-Mumbai service was driven by S.S. Kamble with V.K. Desai as conductor, while the Rajapur-Borivali (north Mumbai) service was driven by E.S. Munde and P.B. Shirke was conductor -- all were based with the Chiplun Bus Depot in Ratnagiri.
Tragedy struck after heavy rains flooded the Savitri River which originates in Mahabaleshwar and flows through Ratnagiri-Raigad districts.
Sheer force of the flood waters built up huge pressure on the bridge near Mahad around midnight and it collapsed, with around a dozen piers totally washed out by the gushing waters.
Eyewitnesses have claimed that around five to six private vehicles were also missing and they were feared to be washed away in the floods, but is yet to be confirmed by authorities.
Maharashtra Governor C.V. Rao expressed grief over the incident which has led to the loss of so many lives.