Domestic stock markets started Tuesday's session with sharp losses, with the Sensex falling more than 450 points, amid geopolitical tensions between India and Pakistan. Bombay Stock Exchange benchmark index Sensex declined as much as 499.22 points to touch an intraday low of 35,714.16 in morning trade, while the Nifty hit 10,729.30, down 150.8 points from the previous close. Selling in banking, auto and metal stocks dragged the markets lower amid a broad-based weakness. Analysts awaited key macroeconomic data due later this week.