The Benchmark Sensex on Thursday plunged over 440 points to dip below the 34,000 mark in the morning trade. Sensex is currently trending at 33,593.87 points.
The 30-share BSE Sensex dropped by 301.49 points, or 0.89 per cent, to 33,732.47 points in the early morning trade. It had gained 186.73 points on Wednesday.
Reflecting the overall bearish mood, all the sectoral indices, led by realty, metal, capital goods and bankex, were trading in the negative terrain with losses up to 1.85 per cent.
Also, the broader NSE Nifty cracked below the 10,200-mark by falling 79.95 points, or 0.78 per cent, to 10,144.80.
Top laggards included Bharti Airtel, IndusInd Bank, Infosys, Vedanta Ltd, RIL, HUL, L&T, Adani Ports, Tata Motors, Asian Paint, Axis Bank, Bajaj Auto, HDFC Ltd, PowerGrid, Yes Bank and Tata Steel, falling by up to 3.71 per cent.
However, Wipro rose 1.73 per cent after the company posted better-than-expected earnings on Wednesday.
Elsewhere in Asia, Japan's Nikkei tumbled 2.80 per cent, Shanghai Composite Index down 1.49 per cent, Hong Kong's Hang Seng fell 1.90 per cent and Korea plunged 2.23 per cent.
The Dow Jones Industrial Average ended 2.41 per cent down Wednesday and wiped out the gains for the year.
Meanwhile the rupee weakened by 19 paise to 73.35 against the US dollar on Thursday due to increased demand for the US currency from importers.
Brokers said negative cues from other Asian bourses after US markets plummeted Wednesday as a sharp drop in tech shares and worries about corporate earnings, triggered sell-off on the domestic exchanges.