The Indian equity benchmarks fell for fourth session in a row on Monday as simmering tensions between Russia and Ukraine kept investors at tenterhooks while relentless selling by foreign institutional investors (FIIs) of Indian shares also added to sombre mood on Dalal Street, analysts said. The markets staged a gap down opening recovered intraday losses and again fell as they succumbed to profit booking at higher levels. The Sensex traded in a band of 975 points and Nifty 50 index touched an intraday low of 17,070 and high of 17,351.