India's foreign exchange reserves fell to $280.770 billion for the week ended September 18 from $280.978 billion in the previous week.
The foreign currency assets (FCA) fell by $209 million during the week to $264.353 billion against $264.562 billion a week-ago, RBI said in its weekly report.
Foreign currency assets expressed in US dollar terms include the effect of appreciation or depreciation of non-US currencies (such as Euro, Sterling, Yen) held in reserves, the central bank said.
During the week, gold reserves stood unchanged at $9.828 billion while the Special Drawing Rights increased marginally to $5.224 billion against $5.223 billion in the previous week, the central bank said.
The country's reserves position in the international monetary fund stood unchanged at $1.365 billion during the period, RBI said.