The BSE benchmark Sensex fell by 193 points in early trade today to 15,495. The wide-based National Stock Exchange Nifty Index shed 59 points, or 1.26 per cent, to 4,634.In the Asia region, Hong Kong's Hang Seng Index was down by 0.68 per cent and Japan's Nikkei shed 0.62 per cent in morning trade today.