The rupee tumbled to an all-time intra-day low of 65.72 per dollar on Tuesday on heavy month-end demand of the US currency from importers and banks amid sharp fall in the local equity market. It quoted 65.72 at 12.00 hours (IST) at the Interbank Foreign Exchange (Forex) Market. The rupee resumed lower at 65.00 per dollar as against the last closing level of 64.30 per dollar at the Forex Market and dropped further to a historic low of 65.72 per dollar. It showed a loss of 142 paise or 2.21 per cent. In the global market, the US dollar slipped against the euro and the Japanese yen in their early trade, as concerns about possible US military action against Syria added to existing uncertainty over Federal Reserve policy.