The average yield rose to 5.97% a year, from 5.8% a year at the previous similar auction June 14.

Romania’s ruling socialist-liberal coalition Wednesday initiated procedures to suspend President Basescu, in a move denounced by the opposition as a power grab. The parliament is expected to vote whether to relieve Basescu of his attributions of head of state on Friday.

The ministry had planned to raise RON500 million at Thursday’s tender. Banks offered RON746 million, but the ministry rejected all yields above 6% a year.

Romania expects to sell RON2.25 billion in debt this month, higher than the RON1.4 billion sold in June.

So far in 2012, the country sold roughly RON36.3 billion in leu-denominated state notes and $2.25 billion in US dollar-denominated bonds. (EUR1=RON4.4796)