The leu closed at 4.5115/4.5145 per euro, from 4.4905/4.495 per euro Wednesday.
The currency opened up at 4.486 to the euro, but lost ground shortly after and traded above 4.5 to the euro for most of the session.
The central bank set the leu’s reference rate at 4.5073 versus the euro, the lowest level in four weeks. Against the US dollar, the leu’s indicative fell to 3.4882 units, from 3.4728 units in the previous day.
In the money market, overnight rates fell slightly to 4.6%-5.1% a year, from 4.7%-5.2% a year Wednesday.