At least 40 people are missing in India's north-east after being swept away by flash floods.
Many people have been moved to higher ground
The floods hit border areas of Assam and Arunachal Pradesh states on Monday.
Many of those lost were workers trapped inside trucks which were washed away. Dozens of villages are under water, and about 35,000 people are homeless.
Forest officials say scores of elephants were also swept away in the floods from the Sijusha elephant project and the Nameri game reserve.
Officials say a sluice gate collapsed on the River Bordikai, which flows into Arunachal Pradesh from Tibet - where a dam is reported to have burst on Monday.
Two more rivers, the Hulengi and the Satrang, have also flooded since then, Arunachal Pradesh officials say.
The flash floods caused huge damage in the Sijusha area of the state's East Kameng district, washing away at least five trucks that were collecting boulders from the river.
More than 35 villages in East Kameng and in Sonitpur district in the neighbouring state of Assam have been flooded, officials say.
About 35,000 villagers have been moved to safer high ground by the authorities in the two states and six relief camps have been opened.
Sijusha is totally cut off from the rest of the country.
An expert on north-east Indian rivers, Dulal Goswami, told the BBC that massive landslides in Tibet often block the normal course of the rivers.
But once the blockages - loosely called dams - give way, water gushes downstream at great volume and speed, causing havoc along the way.
Four years ago a similar surge caused extensive damage, when a dam burst in Tibet flooding the