The benchmark index of the Indian equities market closed lower on Monday with the 30-scrip sensitive index of the Bombay Stock Exchange, Sensex, closing at 20787.30 points, 64.03 points or 0.31 percent lower from the previous close of 20851.30 points. The Sensex had a turnover of 4.00 billion rupees (about 64.55 million U.S. dollars).