India's foreign exchange (forex) reserves depleted by $613.9 million during the week ended December 14, official data showed on Friday.

According to the Reserve Bank of India (RBI)'s weekly statistical supplement, the overall forex reserves decreased to $393.12 billion from $393.73 billion reported for the week ended December 7.

FCAs, the largest component of the forex reserves, edged lower by $631.6 million to $367.86 billion during the week ended December 14.

Besides the US dollar, FCAs consist of 20-30 per cent of other major global currencies.

The RBI's weekly data showed that the value of the country's gold reserves rose by $37.2 billion to $21.187 billion.

However, the SDR value went down by $7 million to $1.45 billion, whereas the country's reserve position with the IMF declined by $12.5 million to $2.617 billion.