Japan on Saturday confirmed the country's first case of swine flu that was caught inside the country and ordered schools closed in one city to prevent it from spreading further.
A male high school student in the port city of Kobe, about 430 kilometers west of Tokyo, has tested positive for the flu, the Ministry of Health said. He has not traveled abroad recently.
Two other students at the same high school, also with no recent travel history, had tested positive in tests done locally, but results were not yet available for tests administered by the national government.
The confirmed case is Japan's fifth overall.