The BSE benchmark Sensex tanked over 244 points in early trade today. This follows increased selling by funds and retail investors after Infosys failed to meet its dollar revenue guidance and also cut its dollar forecast for Financial year 2013. The 30-share barometer, which had lost 129 points in yesterday's trade, fell further by 1.40 per cent, to 17,244.18 in early trade. Similarly, the wide-based National Stock Exchange Niftyindex declined by 72 points to 5,234.