The BSE benchmark Sensex today fell 65 points in early trade on sustained selling by funds and retail investors in auto, realty, capital goods and metal sector stocks. Falling for the fourth straight session, the 30-share index moved further down by 65 points to 20,660. In the past three sessions, Sensex had lost nearly 169 points.The wide-based National Stock Exchange index Nifty traded 26.30 points lower at 6,138.In the Asian region, Hong Kong's Hang Seng fell by 0.34 per cent, while the Japan's Nikkei by 1.20 per cent in early trade today. The US Dow Jones Industrial Average ended 0.62 per cent higher yesterday