Volunteers rushed to areas inundated by floods in Myanmar on Sunday as the country's death toll from the Typhoon Yagi deluge surged to 113 and remote areas reported increasing numbers of dead and missing.

Floods and landslides have killed more than 400 people in Myanmar, Vietnam, Laos and Thailand in the wake of Typhoon Yagi, which hit the region last weekend, according to official figures.

However, with roads and bridges damaged in Myanmar and phone and internet lines down, information has been limited.