The Sensex fell 204 points to close at 15,175 due to heavy selling in the last hour of trading, while the Nifty fell 65 points to 4,544. Key stocks like Reliance Industries fell over 3%, weighing on overall market sentiment. Srei Infrastructure's stock tanked 5% after it announced plans to raise Rs. 500 crore through infrastructure bonds. Tata group companies and pharma stocks like Ranbaxy and Orchid Chemicals rose, while the rupee fell against the dollar due to stock market outflows.