Image source, Reuters

The World Health Organization's operation in Nepal has "mobilized and dispatched essential emergency medical supplies", according to its director-general Tedros Adhanom Ghebreyesus.

He says "selfless" rescuers have his "greatest respect and gratitude".

It follows an earlier post on X, in which the organisation said it was providing "medicines" and "multipurpose tents".

The UN agency also said it was committed to "monitoring public health risks", "strengthening disease surveillance", and ensuring communities could continue to access essential healthcare services.

An Indian government official says the country has sent 10 tonnes of aid to Nepal to assist with the emergency response.

"Our thoughts are with the bereaved families and all those affected. In face of this challenge, India stands with Nepal and its people," says the country's external affairs minister, Subrahmanyam Jaishankar, in a post on X.

Shared alongside this are photos of aid being loaded onto aircraft destined for Nepal.

Image source, X/@DrSJaishankar

Image source, X/@DrSJaishankar

Image source, X/@DrSJaishankar

Image source, LightRocket via Getty Images

The office of Nepal’s prime minister says search and rescue efforts by the country’s army will continue overnight.

In a statement, it says 1,697 personnel have been deployed, while a further 656 have been kept on standby for additional operations.

Six military helicopters rescued 94 people during the day, while five civilian helicopters rescued 12 others. Ground teams rescued a further 27 people, it says.

The office also says 800kg of tents and 200kg of medical supplies were delivered to the affected areas.

A large number of people stranded above Timure will be evacuated by air Thursday morning, the office adds.

Mark Poynting
Climate and science journalist

Initial reports from Nepal had suggested that an earthquake may have triggered the ice avalanche and landslide.

The US Geological Survey, which studies earthquakes, has now said that further analysis indicates “that the seismic energy was instead generated by a landslide” by itself.

Landslides or avalanches can have various triggers. One possibility is that water - either from rainfall or melting ice - may have destabilised the ground or ice.

Climate change is known to be driving faster glacier melt in the Hindu Kush Himalaya region, but scientists say it is too soon to pinpoint its role in this specific event.

In a steep, mountainous and glaciated region like Nepal, hazards often act in chains, with one hazard increasing the chances of another one occurring, says Martha Day, a hydrological researcher at Imperial College. Scientists are now trying to piece together the order of events.

They’ll be looking at satellite images of exactly where the landslide occurred, whether any glacial lakes suddenly drained, and where the river might have become blocked - as well as data on recent rainfall.

In an update, Nepal’s police say 157 bodies have been found in the country following the flooding.

The previous update from authorities put this figure at 100 people.

Image source, EPA/Shutterstock

Nepal police say multiple teams have been deployed to the flood-affected area to carry out search and rescue operations, distribute relief, and record deaths.

A canine team and four drones have also been mobilised for the search and rescue effort, the force says.

According to its statement, 28 police officers in Rasuwa are still missing, and efforts to find them and other missing people will continue.

The public is requested "not to go to river and stream banks, flood-affected areas and risky places" and to follow the information and instructions issued by the government of Nepal and security agencies, it says.

The Trump administration "has no higher priority than the safety and security of Americans", a US State Department spokesperson tells the BBC.

They say they are aware of US citizens affected by the floods and are "closely tracking the situation".

The embassy "is working closely with local tour agencies and local authorities to assist Americans in the affected areas", the spokesperson adds.

As it stands, 54 US tourists are known to be among the missing, according to figures from Nepal's tourist board confirmed by police.

Navin Singh Khadka
Environment correspondent, BBC World Service

Image source, EPA/Shutterstock

Whenever there is a flood like this in the Himalayas, one question that comes up spontaneously is: what caused it?

And the problem often is there is no definitive answer instantly. The difficult terrain of the Himalayas including in Tibet, where some say the flood originated, and where there is hardly any human presence, is the main reason.

Experts therefore try to analyse satellite images, but monsoon clouds have not been so helpful this time, they say.

Officials with Nepal's department of meteorology and hydrology, however, have told me that some images they have seen show a massive chunk of ice (perhaps a part of a glacier) that seems to have collapsed from a mountain in the Tibetan side, bringing down rocks and other sediments with them.

That, they say, may have generated some volume of water because of the friction between the rocks and ice when they were falling down. The remaining debris of rocks and sediments created a dam on the Lhende river below, obstructing its flow initially but ultimately causing it to breach.

Some Nepali academics in China say they have been given similar accounts by some Chinese experts. But the Chinese news agency Xinhua in a post on X has called it a mudslide in Nepal.

Earlier, there were also suspicions of a collapse of a glacial lake but some glaciologists are ruling that out.

The real reason will be known once clear satellite images are obtained and verified by multiple sources.

Image source, AFP via Getty Images

UK Prime Minister Andy Burnham says his government will do "everything we can" to support British nationals after the flash flooding on the Nepal-Tibet border.

Calling the scenes "devastating", Burnham says in a statement that his "thoughts are with all those affected including the families and loved ones of British nationals missing in this tragedy".

“We will do everything we can to support British nationals impacted in the region and are in touch with the relevant authorities to offer support," he says.

British nationals in the region should follow guidance from local authorities as well as travel advice from the British government, he adds.

Nepal police says 100 people have died in the country as of 20:30 local time (14:45 GMT) due to the flash floods.

Those include one in Rasuwa, 11 in Nuwakot, 18 in Dhading, 33 in Chitwan, 19 in Gorkha, seven in Tanahun, and 11 in Nawalpur.

Image source, EPA/Shutterstock

Further analysis indicates that a landslide preceded the flash flooding in Nepal and there was no earthquake, says the US Geological Survey (USGS).

"This event was initially reported as a magnitude 4.4 earthquake," it says.

"Additional analysis of long period seismic waves indicate that the seismic energy was instead generated by a landslide."

Earlier, Nepal's foreign minister had told parliament that preliminary information indicated that an earthquake hit Nepal, which then triggered a landslide and resulted in flash flooding.

Image source, EPA/Shutterstock

Initial estimates show that roads and bridges worth more than 15bn Nepalese rupees (£72.18m, $98.33m) were damaged by the floods, a government official tells BBC Nepali.

Earlier, we reported that 19 bridges and 40km (25 miles) of road had been damaged.

Vijay Jaisi, head of the Roads Department, also says portable bridges will be installed at sites where bridges collapsed from Thursday.

Earlier, we brought you the latest pictures from Nepal's Nuwakot district, where the Nepalese foreign minister has warned there is still a risk.

Here are some more images from the scene, showing houses and roads submerged in mud, as well as residents examining the extent of the damage.

Image source, AFP via Getty Images

Image source, Reuters

Image source, Reuters

Image source, Getty Images

Army personnel, police and power workers are among the hundreds missing following devastating flash flooding in Nepal.

In an update earlier, the prime minister's office said the missing included:

• 44 army personnel
• 28 police
• 13 armed police

• 60 people working on power projects

Foreign and domestic tourists also form a significant portion of the missing reported so far - with the latest figure now at 579.

As we've been reporting, officials say 95 bodies have been recovered.

Infrastructure has also been hit, with 19 bridges and 40kms (25 miles) of road reported as damaged.

Nepal police have shared a breakdown of the 95 bodies found following the flash flood.

They include one in Rasuwa, 11 in Nuwakot, 18 in Dhading, 33 in Chitwan, 16 in Gorkha, five in Tanahun and 11 in Nawalpur.

Police say they are working to move households at risk to safe places and carry out rescue and search operations.

We are receiving regular updates from Nepalese authorities, and these numbers are likely to change.

Image source, Reuters

Earlier, the BBC spoke to the country director of Save the Children, which has deployed teams to support in the aftermath.

Tara Chettry says the worrying factor is that key infrastructure, including hydropower facilities, has been destroyed.

"This can have a ripple effect as bridges and roads are damaged," she adds.

Meanwhile, Care International's Nepal director Mona Sherpa says the flooding sparks concerns of waterborne diseases given the damage to sanitation infrastructure.

Sherpa says her charity's relief efforts will prioritise those most vulnerable, including women, girls, older people and those with disabilities.

Gabriela Pomeroy
Live reporter

Image source, Sonam Dorjee

I have just spoken to Sonam Dorjee, a trekking guide for international tourists who lives in the village of Rasuwa Syafru Besi in Nepal's Rasuwa district.

Sonam says his village was hit by the flood at 09:00 local time (04:00 BST). Luckily, Sonam had left an hour earlier to drive to Kathmandu for a planned visit.

But his sister, Dechen Tamang, is missing, along with her husband and several other family members.

Sonam says he heard sounds of the floods as he drove away from the village.

"It sounds like an earthquake," he says. "My house has collapsed... I have seen a photo."

He describes the flood as "sudden and devastating".

"Many survivors are now left without homes and they need emergency rescue and evacuation, as well as food, temporary accommodation and medical support."

He is praying his sister may be found alive. “There is a 10% chance we hope," he says.

Phanindra Dahal
BBC Nepali, Kathmandu

The number of missing tourists now stands at 579, according to the latest figures confirmed by Nepali police.

Of the missing tourists, 466 are foreign nationals from 28 different countries.

One hundred and thirteen of the missing tourists are Nepalese, 54 are from the US and the number of missing UK nationals remains at 33 people.

Mark Poynting
Climate and science reporter

It’s difficult to say exactly what has caused the flooding at this early stage, but some details are starting to emerge.

“Most people think of flash floods as being caused by heavy rainfall, but in Nepal and Tibet, as in many other high-mountain regions, they can also result from complex chains of hazards,” says Prof Liz Stephens of the University of Reading.

The working theory in this case is that an ice avalanche was the trigger.

Large volumes of ice and rock would have added to the water already in the river and could have generated a sudden surge in river levels.

The avalanche could also have temporarily blocked the river at a narrow section, creating a dam and allowing water to build up behind it.

When the dam fails “it can cause a sudden, devastating release of water and sediment downstream,” Prof Stephens says.

An earthquake was also recorded in the region at a similar time to the floods.

It’s not yet clear what role that played and whether it triggered the avalanche itself or released water that had already been trapped behind the landslide dam.

The BBC has been hearing from survivors of the flash flood.

"My family members were swept away by the flood in front of my eyes," says Kalpana Malla from Nepal's Nuwakot district.

She says her father, mother, sister and her sister's children were all swept away.

"They could not escape the flood; there was no chance at all," she says. "This flood took everything, but my son and I climbed the rooftop of a house and survived but couldn’t explain how."

Her son, Sugam Malla, says he saved his mother by pulling her hand.

"Before that I had given my phone to my sister to remain safe and contact for help, but she is not reachable now, the mobile is switched off. I am worried she must be swept away."

Another woman, Goma Pandit, says she has lost her buffaloes and all her other cattle.

"My farmland is also swept away. Ten sacks of mustard seeds, tons of corn and rice paddy are all gone. Nothing is left."