Benchmark equity indices fell on Tuesday as investors turned cautious ahead of the key events — RBI’s monetary policy and the US inflation data — due to be announced later this week. Continuous foreign fund outflows and weak trend in Asian and European markets also played spoilsport for the domestic markets. The 30-share BSE Sensex fell 106.98 points or 0.16 per cent to settle at 65,846.50. During the day, it declined 200.85 points or 0.30 per cent to 65,752.63. The NSE Nifty slipped 26.45 points or 0.13 per cent to end at 19,570.85.