High winds hit power lines in Okinawa Prefecture, knocking out electricity to more than 200,000 households on Wednesday morning, as powerful and slow-moving Typhoon Khanun neared Japan's southwestern islands.

So far there has been one death reported and 11 people injured. A man was crushed under a collapsed garage and went into cardiac arrest, according to the Fire and Disaster Management Agency. He was later confirmed dead, media reports said.

Nearly 700,000 people in the prefecture, a popular destination for tourists, were advised to evacuate as the storm moved northwest at a speed of 10 kph, according to the Meteorological Agency.