The BSE Sensex today fell by nearly 66 points in early trade as Infosys' second quarter results failed to cheer the market. The 30-share index, which had gained nearly 174 points yesterday, fell by nearly 66 points, or 0.35 per cent, to around 18,739 with stocks of IT, capital goods and power sectors leading the fall in first five minutes of trade.Similarly, the wide-based National Stock Exchange Nifty declined by over 13 points, or 0.23 per cent, to nearly 5,695.In the Asian region, Hong Kong's Hang Seng index was up by 1.07 per cent, while Japan's Nikkei Index gained 0.71 per cent in the morning trade today.