Banks offered RON1.48 billion, central bank data showed.
At the previous similar auction May 9, the ministry sold RON500 million of treasury bills at an annual yield of 4%.
The ministry plans to sell state treasuries worth RON1.76 billion in July, down from the RON2.15 billion raised a month earlier. Additionally, Romania wants to raise EUR150 million in a second reopening of its February 2016 Eurobond at a local auction scheduled for July 18.
So far in 2013, Romania sold RON27.93 billion in leu-denominated notes and EUR1.08 billion at two euro-denominated auctions on the local market. The ministry also tapped international markets for $1.5 billion at a US dollar-bond auction in February. (EUR1=RON4.4232)