The 30-share barometer, which has lost nearly 219 points in the previous three sessions, moved down further by 56.27 points, or 0.32 per cent, to 17,575.44, with auto, metal and IT sector stocks leading the fall.
Similarly, the wide-based National Stock Exchange index Nifty declined by 13.95 points, or 0.26 per cent, to 5,320.65.
Trading sentiment remained bearish on increased selling by funds and retail investors on concerns over the delay in economic reforms after Parliament failed to transact any business for the sixth straight day yesterday as BJP continued its demand for resignation of Prime Minister Manmohan Singh.
In Asian region, Hong Kong's Hang Seng down by 0.06 per cent, while the Japan's Nikkei was up by 0.28 per cent in early trade today.
The US Dow Jones Industrial Average ended 0.17 per cent lower in yesterday's trade.