Indian equity indices ended lower on fifth straight session on September 25 with Nifty below 24,900. At close, the Sensex was down 555.95 points or 0.68 percent at 81,159.68, and the Nifty was down 166.05 points or 0.66 percent at 24,890.85. About 1405 shares advanced, 2586 shares declined, and 125 shares unchanged.