At least 153 people have died and thousands have fled their homes as monsoon floods swept across Nepal and India, officials said Monday, warning the toll could rise as the extent of the damage becomes clear.
Three days of relentless downpours sparked flash floods and landslides that have killed at least 80 people in Nepal, 73 across northern and eastern India.
Around 200,000 people are living in emergency camps in Assam in northeast India, which suffers frequent flooding during the annual monsoon rains.
Another 15,000 have had to leave their homes in the eastern state of Bihar, which borders Nepal and where one official said seven rivers were at danger levels.
Huge swathes of the state were submerged in 2008 when a river burst its banks across the border in Nepal, with the two countries trading blame for the disaster.
Also Read- Flood casualties reach 26
In Nepal, police said over 48,000 homes have been totally submerged by the floods.
As emergency workers struggled to reach far-flung areas, the country's home ministry said another 36 people were missing, presumed dead, revising down an earlier count after more bodies were found.
The Nepal Red Cross warned that shortages of safe drinking water and food could create a humanitarian crisis in the impoverished Himalayan country.
In India, emergency workers were scouring the area hit by a massive landslide that swept two passenger buses into a deep gorge on Sunday, killing at least 46 people in the mountainous northern state of Himachal Pradesh.
In the neighbouring state of Uttarakhand, which also borders Nepal, three people were killed in a landslide late Sunday triggered by heavy rains, local police official Ajay Joshi said.
Meanwhile, Bangladesh deployed troops to shore up embankments in the northern districts of the country, where flooding has killed 26 people.
The government's Flood Forecasting and Warning Centre warned that water levels in some major rivers would continue to rise over the next 72 hours, raising fears the flooding could spread.
In Nepal, the worst of the flooding was in the southern lowlands known as the Terai, the country's most fertile region and home to much of its agriculture.
The rains are now expected to shift westwards and authorities in Nepal have begun evacuating 74,000 people from a vulnerable western district.
Hundreds have died in torrential rain, floods and landslides in neighbouring India during the monsoon, which hits the country's southern tip in early June and sweeps across the nation, lasting into September.