A sightseeing boat has capsized on a swollen river in southern India, killing 12 people and leaving 35 missing, a government official says.

Andra Pradesh state’s home minister, Mekathoti Sucharita, said Sunday that 50 passengers and 11 crew, all Indian nationals, were on board the boat when it capsized in the Godavari River on Sunday.

A search operation is underway.

Sucharita said 14 people who were wearing life-jackets were rescued by local fishermen.

Indian Prime Minister Narendra Modi tweeted his condolences to the families of the victims.

The accident occurred near Kachuluru village in East Godavari district, 380 kilometres east of the state’s capital of Hyderabad.

The boat was heading from Singanapalli to Papikondalu, a famous tourist spot.