The benchmark index of the Indian equities market slump nearly 600 points on Tuesday as foreign investors exit the market fearful of high current account deficits to dent its economy. The 30-scrip sensitive index of the Bombay Stock Exchange, Sensex, closed at 17,968.08 points, 590.05 points or 3.18 percent lower from the previous close of 18,558.13 points. The Sensex had a turnover of 6.55 billion rupees (about 99.74 million U.S. dollars).