Forex traders said the outflow by FIIs and decline in equity benchmark indices also pressured the rupee.At the interbank foreign exchange market, the rupee opened at 96.89 against the US dollar, then slipped further to 96.90, registering a fall of 20 paise from its previous close.On Tuesday, the Indian rupee slumped for the eighth consecutive session and ended 50 paise down at its record low of 96.70 against the US dollar.

Meanwhile, the dollar index, which gauges the greenback's strength against a basket of six currencies, was trading at 99.262, up 0.01 percent.Brent crude, the global oil benchmark, was trading down 0.35 per cent USD 110.59 per barrel in futures trade.On the domestic equity market front, Sensex tanked 517.11 points to 74,667.51 in early trade while Nifty dropped 152.45 points to 23,475.80.Foreign Institutional Investors turned net sellers after three sessions of buying and offloaded equities worth Rs 2,457.49 crore on Tuesday, according to exchange data.