More heavy rain in Pakistan is frustrating efforts to help about 14 million people affected by severe flooding in much of the country.
Helicopter missions in the north-west have been grounded and a red alert has been issued for the south.
One dam in Sindh province has been breached and engineers are warning that the huge Tarbela and Mangla dams are close to their maximum levels.
The region's worst floods for 80 years have killed at least 1,600 people.
Pakistan's meteorological office has warned that at least two more days of rain are expected in Sindh, where authorities have declared an "imminent" and "extreme" flood threat.
Further downpours are also forecast in the badly-hit north-western province of Khyber-Pakhtunkhwa.
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