The central bank bought treasuries from 13 lenders and will sell them back June 25.
Last week, the central bank injected RON11.5 billion into the market in a similar operation.
The number of state treasuries commercial banks are allowed to use as guarantee for operations on the monetary market was recently increased to five from three, and analysts predicted the lenders would attract more funds from the central bank in the next period.
On the money market Monday, weekly rates were flat at 5%-5.5% a year. (EUR1=RON4.464)