Mumbai, Aug 31 - A key index of the Indian equities markets closed 1.65 percent lower Monday ending a seven-day rally as investors booked profits.

The 30-scrip sensitive index (Sensex) of the Bombay Stock Exchange (BSE), which opened at 15,812.15 points, ended at 15,659.49 points (provisional), down 262.85 points or 1.65 percent.

The broader-based Nifty of the National Stock Exchange (NSE) closed lower at 4,658.3 points, down 1.56 percent.

Broader market indices, however, managed to close in the green, with the BSE midcap index closing 0.21 percent higher and the BSE smallcap index ending 0.41 percent up.