The Sensex at the Bombay Stock Exchange today fell by 76 points in the early trade, extending its losing streak for the fifth straight day. The fall was due to sustained selling pressure as the rupee plunged to new record low of 65 against the dollar.The 30-share index declined by 76 points to 17,829. The gauge had lost over 1,461 points in the previous four sessions.Similarly, the wide-based National Stock Exchange index Nifty dipped below 5,300 mark by falling 15 points to quote at 5,287.In the Asian region, Hong Kong's Hang Seng index was down 1.28 per cent, while Japan's Nikkei Index shed 0.82 per cent in the morning trade today. The US Dow Jones Industrial Average ended 0.70 per cent lower in yesterday's trade.