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China has warned there is a "high risk" that a lake which formed after the recent landslide near the Nepal-Tibet border may breach its banks, causing a second flood downstream.

The warning comes after Wednesday's deadly flash flood in the same area which scientists say was triggered by the collapse of a mountain glacier into a river.

China correspondent Laura Bicker explains.

Read more: 'High risk' of lake breaching and causing second flood, warns China

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