The Sensex at the Bombay stock Exchange fell 57 points, or 0.3 per cent, to 17,200 in early trade, today, on profit-booking by investors, amid weak Asian bourses. Later, the Sensex remained subdued, and stood 38 points, or 0.2 per cent in the red, at 17,219 in afternoon deals, a short while ago. The Sensex had gained nearly 620 points in the last four trading sessions. Other Asian markets in China, Hong Kong, Indonesia, South Korea and Singapore were down by between 0.3 percent and 0.7 percent, today, on investor caution, after the US central bank yesterday offered no new measures to stimulate the economy.