Country's foreign exchange reserves decreased by 3.58 billion US dollar to 346.79 billion US dollar in the week of February 26, on account of decrease in foreign currency assets (FCAs), according to Reserve Bank. FCAs, a component of overall reserves, decreased by 3.56 billion US dollar to 325.03 billion US dollar in the reporting period, RBI said in a release in Mumbai today.FCAs, expressed in dollar terms, include the effect of appreciation and depreciation of non-US currencies, such as the euro, pound and the yen, in the reserves. Gold reserves remained unchanged at 17.70 billion US dollar in the week. India's special drawing rights with the International Monetary Fund (IMF) decreased by 7.4 million US dollar to 1.48 billion US dollar in the week, while the country's reserve position with the Fund decreased by 13 million US dollar to 2.59 billion US dollar, RBI said.