The leu closed at 4.52/4.524 per euro, from 4.43/4.433 per euro Wednesday.
Elsewhere in the region, the leu’s peers were also retreating against the euro, amid concern the US Federal Reserve would trim its bond buying program.
The leu opened at 4.458/4.46 to the euro and further depreciated, with market participants saying foreigners have been covering their bond positions. Growing euro demand from local companies has also contributed to the leu’s weakening, they said.
The central bank set the leu’s reference at 4.4763 versus the euro, the lowest rate since December 18, 2012. The exchange rate fell 3.7% versus the euro in the past six days.
Against the US dollar, the leu’s indicative lost almost 0.7% on the day to 3.4113 units Thursday, the weakest level since April 4.
In the money market, overnight rates rose slightly to 3.4%-3.9% a year, from 3%-3.5% a year Wednesday.