The regulator did not provide further details in its statement, published on Thursday.
In July, Bulland Investments placed a ten-year 9.08 million levs ($5.1 million/4.6 million euro) bond issue, comprising 9,080 bonds.
The issue carries a fixed annual coupon of 4.75% with payments due semi-annually.
(1 euro = 1.95583 levs)