The central bank bought USD 9.756 billion from the market and sold USD 4.325 billion in April, according to the RBI's monthly bulletin released today.
In the year ago period, RBI was also a net purchaser of the US currency after it bought USD 7.850 billion and sold USD 1.980 billion from the spot market.
In 2014-15, the central bank had net purchased USD 56.882 billion. It had bought USD 126.604 billion and sold USD 69.772 billion in the previous fiscal.
While speaking to reporters after the announcement of the second bi-monthly monetary policy on June 2, RBI Governor Raghuram Rajan had said, "Where we sort of move in or intervene, is when we find strong flows going in or going out, in such a way that we think the rupee departs significantly, there is significant movement.
"We do not quite know where fundamentals are, but there is significant movement one way or the other, and we believe that is temporary and not likely to be sustained. So to reduce volatility we intervene in the market."