Sudden floods triggered by heavy rains have killed more than 400 people across parts of Pakistan, India-administered Kashmir and Nepal, authorities have said, with scores of people still missing.

Most of the deaths were recorded by disaster authorities in the mountainous Khyber Pakhtunkhwa province in north-west Pakistan. At least 74 homes have been damaged, while a rescue helicopter crashed during operations, killing its five crew.

Flooding triggered by days of heavy monsoon rains in northern Pakistan has killed at least 351 people, with the toll continuing to rise. Local media reported that Khyber Pakhtunkhwa province was the hardest hit, with 328 fatalities, while 12 people died in Gilgit-Baltistan and another 11 in Azad Kashmir.