The 30-share BSE barometer started on a negative note and fell further to touch the day's low of 22,286.26. It closed down by 184.52 points, or 0.82 percent at 22,323.90, the lowest level since April 16 this year.
The gauge had gained 104.53 points in the previous two sessions. The broader NIfty of the National Stock Exchange dipped below the crucial 6,700 level and closed at 6,652.55, down by 62.75 points, or 0.93 percent.
Brokers said sentiment turned weak as selling pressure gathered momentum ahead of outcome of General elections. Slowing down of foreign capital inflows also impacted the market, they added.
A weakening trend in the global markets on escalating tensions in Ukraine added to downward pressure, they said.      

IT stocks, mainly Infosys and TCS, witnessed heavy sell-off after the rupee rose to a one-month high and reports that UBS downgraded Infosys.
Infosys lost 3.15 percent, Tata Consultancy fell by 1.48 percent and Wipro by 1.77 percent. HDFC fell by 2.75 percent, Bajaj Auto by 1.60 percent and Maruti Suzuki by 1.46 percent.
The IT sector index suffered the most, losing 2.59 percent to 8,491.49, followed by the tech index which fell 2.23 percent to 4,734.54. The realty sector index lost 1.11 percent to 1,373.54 points and metal index by 0.71 percent to 9,894.94 and auto index 0.70 percent to 13,265.53.
Of the 30 Sensex shares, 25 declined, while five ended with gains.


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