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Tokyo shares extended losses after the decision.
The dollar rose from about 84.23 yen to an intraday high of about 84.39 yen right after the BOJ's decision, but later sagged back down. It last stood at 84.21 yen, down 0.2 percent on the day.
Japan's Nikkei share average extended losses and fell as much as 1.1 percent on the day at one point. The Nikkei was last down 0.1 percent at 10,147.54.
Center>Copyright Reuters, 2012