Nepal has warned of fresh rain and thunderstorms in flood-hit regions as rescue teams continue searches. The weather threat could hamper relief work and raise the risk of more downstream flooding.

Nepal's flash floods have killed 669 people and left nearly 2,400 missing as rescuers press on. Renewed rain, a new upstream lake and broken roads have heightened fears of another surge.

Nepal has warned of fresh rain and thunderstorms in flood-hit areas as rescuers search for thousands missing after a glacial collapse. The weather threat could hamper relief work and heighten fears of another downstream flood.

Instead, Nepal wants cash contributions through a one-door mechanism, where funds are channelled through a single designated government fund.