TOKYO, Oct 5 (Reuters) - Japan's Nikkei edged down to its lowest in three weeks on Tuesday, pressured by falls on Wall Street, with eyes on the outcome of the Bank of Japan's policy-setting meeting that ends later in the day and the reaction in currency markets.
The benchmark Nikkei slipped 0.5 percent to 9,337.64, after falling as low as 9,332.19, its lowest since Sept. 15.
The broader Topix dipped 0.3 percent to 820.12. (Reporting by Aiko Hayashi; Editing by Michael Watson)