The BSE benchmark Sensex extended its losses for the seventh straight session, losing over 128 points in early trade today on sustained selling amid a weakening Asian trend. The 30-share BSE Sensex, which has lost over 1,107 points in the past six sessions, fell further by 128.62 points, or0.78 per cent, to 16,333.09 in the first five minutes of trade, led by refinery and metal stocks. In a similar fashion, the 50-share National Stock Exchange Nifty index declined by 41.20 points, or 0.83 per cent, to 4,893.55 points. In the Asia region, Hong Kong's Hang Seng index was trading 1.36 per cent lower, while Japan's Nikkei shed 1.33 per cent in morning trade today. The US Dow Jones Industrial Average lost 1.13 per cent in yesterday's trade.