Typhoon Chataan claimed its first victim in Japan as it threatened to strike the Boso Peninsula in Chiba Prefecture by early Thursday, the Meteorological Agency said Wednesday.

Dai Shuto, a 13-year-old junior high school student, was found dead Wednesday after he went missing while playing soccer on a river bank in Oita the day before, police said.

A man was reported missing in Gifu Prefecture, according to the National Police Agency.