Japan's Nikkei 225 index tumbles 4.6%, hit by losses for technology shares and expected impacts of a strong yen

Japan's Nikkei 225 index tumbles 4.6%, hit by losses for technology shares and expected impacts of a strong yen

BANGKOK -- Japan's Nikkei 225 index tumbles 4.6%, hit by losses for technology shares and expected impacts of a strong yen.