New Delhi, Feb. 20 -- The Indian rupee slipped on Friday to post its steepest weekly fall in a month as likely portfolio outflows and lingering geopolitical tensions weighed on the currency, pushing it close to the 91-per-dollar mark.

The rupee closed at 90.9825 per dollar, down 0.3% on the day and 0.4% for the week.

Central bank intervention, including on Friday, helped keep the currency above 91 despite broad-based dollar demand from importers and paring of bullish positions, traders said.

There was a meaningful supply of dollars from the central bank in the market today, a trader at a Mumbai-based bank said, adding he expected the rupee to trade between 90.50 and 91.50 in the near term.

Asian currencies were mixed, while the dollar...