The Indian rupee fell by 4 paise to Rs 45.65 against the US dollar in early trade at the Interbank Foreign Exchange on Friday, weighed down by gains registered by the greenback against other currency rivals.

Forex dealers said besides dollar gains against other Asian currencies, a weak opening in the stock market due to foreign fund outflows also put pressure on the Indian rupee.

The Indian rupee had ended flat at 45.61/62 against the US currency on Thursday.

The Bombay Stock Exchange benchmark Sensex opened 58.35 points lower at 18,390.78 in opening trade on Friday.