Pakistan faces a major hunger crisis as the number of severely underfed children in the flood-hit country rises, Save the Children has warned.
More than 12,000 children have become acutely malnourished since heavy monsoon rains devastated large parts of the country in early August, according to UN statistics.
And the true figure could be higher still, with experts suggesting that many vulnerable young survivors in remote areas may have slipped through the net.
Around 21 million people have been affected by the floods that swept through Pakistan's north west region in early August.
Of those, around three million are children under the age of five, according to Save the Children.
Exposed to contaminated water, many of them remain vulnerable to disease after seven weeks without proper food and medical care.
Senior officials from around the world will meet United Nations secretary general Ban Ki-moon in New York on Saturday to discuss the global response.
As they do so, charity leaders warned that the risk to children from malnutrition is set to increase in the weeks to come.
Save the Children's country director in Pakistan Mohammed Qazilbash said: "The number of malnourished and critically sick children will rise dramatically in October and November as the food crisis takes its toll.
"These children have weakened immune system because of the shortage of food, making them very vulnerable to disease."