The 30-share index fell 50.70 points or 0.17 per cent to 28,583.80. The gauge had gained 280.96 points in the previous four sessions.
The NSE Nifty broke below the 8,800-mark falling 23.90 points, or 0.27 per cent, to 8,784.50.
Equity brokers said that besides trimming of positions in recent gainers by participants at existing levels, weak trend in other Asian markets dampened sentiments here as investors awaited upcoming US and Japanese central bank meetings.
The US Dow Jones ended 0.02 per cent lower in yesterday's trade.
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