Rescuers in Japan worked overnight and into Thursday looking for survivors of Typhoon Wipha, which has killed at least 18 people.
Around 39 people are still missing on Izu Oshima island, south of Tokyo, after the typhoon triggered storms and landslides on Wednesday.
The island governor has been criticised for not ordering an evacuation.
In the Japanese capital, Tokyo, the typhoon led to schools closing and around 400 flights being cancelled.
Hundreds of rescue workers at Izu Oshima searched through piles of mud, broken houses and debris for bodies.
Yoshinori Sano, a spokesman for the rescuers, said that they were “hopeful” of finding survivors.
The mayor of the island, Masafumi Kawashima, apologised for not ordering an evacuation.
He said that he had not issued an evacuation advisory at the time because he feared that doing so “in the middle of heavy rains in the dark could lead to a secondary disaster”.
“But in retrospect, I think that was naive,” he said.
Meanwhile, operators at the crippled Fukushima nuclear plant said they detected increased radiation levels after rain from the typhoon made contaminated soil flow into a ditch leading to the sea, broadcaster NHK reported.
They said they would begin a cleanup operation, NHK added.