The death toll from catastrophic flash floods along the border between Nepal and Tibet has risen to at least 270, while more than 1,300 people were missing.

Rescue teams were searching for survivors on Thursday, a day after a glacial collapse sent a huge wall of mud and rock barreling through the Himalayan communities, sweeping away entire villages.Devastating flash floods hit northern NepalTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video

Nepal's National Disaster Risk Reduction and Management Authority said more than 800 people were missing in the country, almost 600 of them foreign nationals.

In Tibet, Chinese broadcaster CCTV reported 558 people missing in Gyirong county, including 260 foreigners. Three deaths had been confirmed there as of Thursday morning, with two villagers rescued.

What do we know about the victims of the flood in Nepal and Tibet?