Mumbai, July 28 - Indian equities opened slightly higher Tuesday, ahead of the monetary policy review by the central bank, but slid slightly as analysts expected little change in the key policy rates.

The sensitive index (Sensex) of the Bombay Stock Exchange (BSE) opened at 15,428.50 points, as against Monday's close at 15,375.04 points, and then moved lower to 15,294.17 points.

Some 20 minutes into trading, the key, 30-share index was ruling at 15,356.14 points, with a loss of 18.90 points, or 0.12 percent over the previous close, data with the exchange showed.

The broader S&P CNX Nifty of the National Stock Exchange (NSE) was ruling at 4,561.35 points, against Monday's close at 4,572.30, with a loss of 0.24 percent.