Super Typhoon Ragasa, the world's largest tropical storm this year, killed at least 17 people in Taiwan and claimed 10 more lives in the Philippines on Wednesday.
The deaths in Taiwan were caused after a mountain barrier lake overflowed into nearby communities due to heavy rains, authorities said.
The Central Emergency Operation Center (CEOC) said the lake, formed in Hualien County after an earlier typhoon in July, spilled over Tuesday, flooding surrounding areas.
Authorities said that, in the affected zones, at least 17 residents were still missing.
More than 8,000 villagers had been evacuated earlier in the week as Typhoon Ragasa approached Monday.
