Indian equity indices ended on weak note with Nifty below 23,350 on September 22. At close, the Sensex was down 329.91 points or 0.44 percent at 74,529.08, and the Nifty was down 85.30 points or 0.36 percent at 23,329. About 2074 shares advanced, 2090 shares declined, and 187 shares unchanged.