Central bank on Friday injected $325.5 million and 14 million yuan renminbi ($1.98 million) into the market an effort to keep it stable and prevent shortages.
A central bank spokesman said the dollar intervention was for agricultural machinery and industrial raw materials, while the yuan renminbi was for renminbi-denominated letters of credit.
On Tuesday, the bank offered $100 million to the wholesale market and $55 each to small businesses and individuals with certain dollar expenses such as school fees and medical bills.
A central bank spokesman said the bank would continue to ensure adequate liquidity in the market.
On Friday, $1 exchanged for 358 naira at the bureau de change segment, while 1 renminbi exchanged at 48 naira, the bank said.
