The leu closed at 4.557/4.56 per euro, from 4.562/4.566 per euro Thursday.
The currency opened flat at 4.561/4.563 to the euro, but further gained ground, hitting an early high of 4.5515 to the euro.
Market participants said the central bank was probably selling foreign currency from the Finance Ministry, as the latter must repay some due debt.
The central bank set the leu’s reference at 4.5538 to the euro, the highest rate in three weeks. Against the US dollar, however, the leu’s indicative lost 0.35% on the day to 3.52 units.
In the money market, overnight rates were flat at 4.9%-5.4% a year.