The rupee strengthened by 4 paise to Rs 45.48 against the US dollar in early trade at the Interbank Foreign Exchange on Tuesday.

Dealers said a firm opening in the equity markets supported the rupee sentiment. Besides, dollar weakness against other Asian currencies and the euro overseas also supported the rupee.

The rupee had ended at a seven-week low of 45.52/53 a dollar in the previous session.

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