The 30-share barometer, which shed 21.79 points in the previous session, fell by 166.32 points, or 0.61 per cent, to slip below the 27,000-mark to 26,924.10.
Stocks of realty, capital goods, metal, auto, power and banking sectors declined due to profit-booking.
Similarly, the National Stock Exchange index Nifty fell below the 8,100-level by declining 56.65 points, or 0.69 per cent, to 8,064.80.
Brokers said increased selling by funds and retail investors in the recent out-performers amid a subdued trend at other Asian bourses on profit-taking, mainly dampened trading sentiment.
The US Dow Jones Industrial Average, however, ended 0.08 per cent higher in Friday's trade.
