At least 344 people have been killed in devastating floods in northwestern Pakistan after heavy monsoon rains, while rescue teams search for more than 150 missing.

Authorities said Khyber Pakhtunkhwa was the hardest-hit province, with 317 deaths, including 208 in Buner, where entire villages were buried under landslides.

The floods destroyed hundreds of homes, raising fears of a worsening disaster as the rains continue.