A weak trend at other Asian markets was the main trigger for the plunge as investor sentiment was dampened by fears of a possible Greece default.
The 30-share gauge, which had lost 84.13 points in the previous session, hurtled down 535.87 points, or 1.92 per cent, to 27,275.97.
All the sectoral indices were trading in the negative terrain, led by realty, capital goods and banking, with losses up to 3.16 per cent.
Also, the NSE Nifty slipped below the 8,300 mark by skidding 166.45 points, or 1.99 per cent, to 8,214.65.
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Besides, weakness in the rupee, which turned lower by 24 paise to 63.88 against the dollar in early trade at the forex market, too negatively impacted sentiment, they said.
In Asian markets, Hong Kong's Hang Seng was down 1.41 per cent while Japan's Nikkei slumped 1.78 per cent in early trade today.
The Dow Jones Industrial Average, however, ended 0.31 per cent higher in Friday's trade.