Several highway bridges have collapsed and roads were blocked by landslides and floods, leaving thousands of travellers stranded, local media reported on Sunday.
Monsoon floods and landslides have killed at least 66 people across Nepal and India but officials fear that figure could nearly double as rescuers search for dozens believed lost under mud and in submerged villages.
Similarly, seven persons died in Rautahat floods and landslips, two in Bardiya, one in Dhanusha, Makawanpur, Kailai and Palpa districts each. "But we are more focused on rescuing those who are alive than collecting details about the dead", he said, indicating the death toll could go up.
In the popular jungle safari resort of Sauraha in Chitwan, hotels were forced to shift their guests to higher floors as waters rushed into the premises.
"There isn't a house without water".
Narayan Prasad Bhatta, the chief district officer of Chitwan district, said: "We are mobilising all the resources we have to ensure that everyone is safe". In the eastern city of Biratnagar an airport runway was under two feet of water, TV footage showed, leading to a suspension of flights.
Prime Minister Sher Bahadur Deuba expressed his condolences and urged people to remain. "All four security agencies have already swung into action", he said in a video recording Saturday.
Nepal's weather department warned that heavy rain was expected to continue for another day, following days of torrential downpours.
Every year, floods and landslides triggered by monsoon rains cause numerous deaths in Nepal, where the monsoon season lasts from June to September.
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