The 30-share barometer declined 33.44 points, or 0.12 per cent, to 27,245.32, with sectoral indices led by power, realty, auto, capital goods and IT bringing about the fall.
The index had risen over 881 points in the previous six sessions.
The NSE Nifty was trading lower by 19.50 points, or 0.23 per cent, at 8,351.20.
Brokers said that apart from profit-booking in recent gainers in an overbought market, a mixed trend in rest of Asia following overnight losses in Europe was mainly responsible for the snap.
Japan's Nikkei was quoting 0.87 per cent lower and Hong Kong's Hang Seng fell 0.82 per cent while Shanghai Composite was up 0.23 per cent in early deals.
The US markets were closed yesterday for the Independence Day holiday.