Thirty-three people from the UK are among hundreds feared missing following a deadly flash flood near the Nepal-Tibet border, Nepal's Tourism Board has said.
Flooding and mud slides hit the Rasuaw region in the morning on Wednesday, killing at least 95 people in Nepal and three in Tibet, according to Chinese state media.
People from 26 different countries are among the 403 people who are missing - including 61 Nepali nationals and 341 foreign nationals - the tourist board confirmed.
The UK Foreign Office said it is working closely with Nepalese authorities "following concerning reports of British nationals who are missing" and has encouraged Brits to follow local guidance and "remain alert to the changing situation".
Excursion company Alpine Eco Trek, which offers guided expeditions and tours in Nepal, told the Press Association (PA) that 12 British nationals on its tour in the region - as well as two Irish nationals - were on an excursion across the Nepal-Tibet border and are believed to be missing.
Manager Kumar Adhikari said there was "not much info to share at the moment, but yes we have 12 British citizens (supposed) to make entry this morning".
According to the company's travel logs, shared with PA, the age of the missing British citizens ranges from 13 to 65.
In a joint statement with Australia, the EU, Finland, France, Norway and Switzerland, the UK embassy in Nepal urged British nationals in Nepal to "exercise caution in affected areas".
The flood hit early on Wednesday in Rasuwa, just north of Nepal's capital Kathmandu, with preliminary information suggesting it was caused by an earthquake triggering an avalanche with melted snow pouring into the Bhote Koshi river.
Dramatic CCTV footage showed a wall of water and mud hitting buildings near a border crossing and video filmed from inside a bus in Trishuli captured dozens of people trying to flee a flood surge that was surging through the valley.
Meanwhile Chinese state media outlet CCTV said a mudslide in Tibet's Gyirong killed three people and left 265 missing, with rescue efforts under way.