Rescuers were struggling to retrieve bodies from debris after flash floods triggered by heavy monsoon rains across northern Pakistan killed at least 344 people in the past 48 hours, authorities said on Saturday.

The majority of deaths, 328, were reported in mountainous Khyber Pakhtunkhwa province, the Provincial Disaster Management Authority said.

Most were killed in flash floods and collapsed houses, while at least 120 others were injured.