Nepal has temporarily halted rescue operations after authorities received information that a water barrier on the Tibetan side of the border had breached, raising the risk of further flooding in the Himalayan region.
Police warned security personnel, rescue workers and members of the public involved in relief operations to remain alert and immediately move to safer locations.
The warning came two days after a glacial collapse triggered deadly flash flooding in Nepal, killing 469 people. Around 1,400 people are still missing, including hundreds of foreigners, according to the information provided by authorities.
Nepalese authorities stopped rescue operations for 90 minutes amid concerns that another wave of flooding could hit the area within hours.
Narendra Pariyar, the senior bureaucrat of Nepal’s Rasuwa district, said the water level in the river was rising. Helicopter rescue operations were also suspended, while residents were seen moving towards higher ground.
China pauses rescue operations in Tibet
China also suspended rescue operations in the affected area, citing the risk of renewed flooding.
A lake had formed near the China-Nepal border after large amounts of mud and debris accumulated following a mudslide. The lake began overflowing towards areas where rescue teams had been working.
Chinese authorities ordered rescue teams to remain on standby and withdraw one kilometre from the affected area as a precaution.
The developments came as hundreds of people remained missing in Tibet following the deadly mudslide.
Barrier lake raises fresh flood fears
The barrier lake formed after mud and debris hit the Gyirong border hub in Tibet on Wednesday. Aerial footage captured by a Chinese rescue team on Thursday showed brown water accumulating in a basin with no visible outlet.
The water had already covered bushes and trees and was pressing against a barrier made of debris and stones.
Earlier, rescuers and residents on the lower banks in Nepal had been advised to move to higher ground. Chinese personnel and vehicles were also moved away from the area as concerns grew over the possibility of the lake bursting.
Authorities were also concerned about potential secondary disasters, including mountain collapses and avalanches.
The renewed warning has added to the challenges facing rescue teams as Nepal continues efforts to locate those still missing after the devastating flash floods.