Forex dealers said increased demand for the US currency from importers and the greenback's gains against other currencies overseas after minutes of the Federal Reserve's last meeting pointed at an interest rate hike this year, put pressure on the rupee.
On Monday, the rupee had gained 15 paise to end at 66.53 against the American currency on hopes of more foreign capital inflows.
Meanwhile, the benchmark BSE Sensex fell by 265.21 points, or 0.94 per cent, to 27,817.13 in early trade today.