The death toll rose to 25 on Tuesday as efforts continued to find the missing after torrential rain hit parts of Kyushu last week, with more than 20 people still unaccounted for.

About 2,000 Self-Defense Forces members, firefighters and others were engaged in search and rescue operations in Fukuoka Prefecture's Asakura, one of the hardest-hit areas.

Following the torrential rain, which began last Wednesday, about 1,500 people remain in evacuation centers in Fukuoka and Oita prefectures, according to both prefectural governments.