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.

Heavy monsoon floods have killed at least 194 people in the last 24 hours in flash floods and landslides in Pakistan and Pakistan-administered Kashmir.