Snapping a three-day rally, the Sensex at the Bombay Stock Exchange fell 28 points to close below the 17,000 level, at 16,972, today. This follows profit-booking, amid reports of rising food inflation. The Nifty at the National Stock Exchange shed 8 points to 5,080.Stock markets in Japan, China, Hong Kong, South Korea and Singapore fell between 0.3 percent and 2.4 percent.