Rescuers in Nepal and China raced on Sunday to find thousands missing after a glacier collapse unleashed a catastrophic mudslide across the Himalayas. Authorities said the death toll rose to 750, with more than 3,000 people missing and 7,514 rescued. The Red Cross estimated more than 90,000 people were likely affected. Rescue work has been repeatedly disrupted by bad weather, rising rivers and fears of fresh flooding.

Residents react as they are evacuated from their homes along the banks of Trishuli river amid rising water levels, in Dhading district, Nepal, Aug. 30. EPA-Yonhap

CHITWAN, Nepal/BEIJING — Rescuers in Nepal and China raced on Sunday to find thousands of people missing after a glacier collapse unleashed a catastrophic mudslide across the Himalayas, as they faced challenging weather conditions and rising water levels.

Authorities said the death toll rose to 750 by Sunday morning, with more than 3,000 people missing on both sides of the Nepal-China border after a torrent of ice, rock, mud and debris swept through mountain valleys and rivers on Wednesday, causing widespread devastation.

The Red Cross has estimated that more than 90,000 people are likely to have been affected by the disaster, which China has linked to the effects of climate change.