Benchmark equity indices settled higher after a volatile session on Monday as investors turned cautious ahead of the US Federal Reserve interest rate decision. The BSE Sensex settled higher by 104.99 points or 0.14 per cent at 72,748.42. The broader NSE Nifty rose by 32.35 points or 0.15 per cent to close at 22,055.70. Sector-wise it was a mixed bag with buying seen in Metals, Realty, and Auto. While IT and FMCG were laggards.