Lower advices from New York market also affected the market sentiment.
Shares of metal, capital goods, PSU, FMCG, banking and realty declined on mild profit-booking. However, power, IT and healthcare sectors firmed up.
The 30-share barometer resumed lower at 20,616.35 points and hovered in a range of 20,649.38 and 20,551.89 before quoting 20,617.46 at 1030 hrs.
It showed a loss of 29.18 points or 0.14 per cent from its last close.
The NSE 50-share index Nifty eased by 3.30 points, or 0.05 per cent, to 6,112.25 at 1030 hrs.
US stocks dipped yesterday on profit booking a day after the S&P 500 hit a record high as the market rallied on the Federal Reserve's surprise decision to maintain its stimulus intact.
Foreign institutional investors (FIIs) bought shares worth a net Rs 3,543.84 crores, as per provisional data from the stock exchanges.