Indian equity indices ended lower for the fourth consecutive session with Nifty below 23,400 on June 1. At close, the Sensex was down 508.40 points or 0.68 percent at 74,267.34, and the Nifty was down 165.15 points or 0.70 percent at 23,382.60. About 1505 shares advanced, 2665 shares declined, and 180 shares unchanged.