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The debt agency sold the new paper at a yield of 2.70 percent, unchanged from a previous sale last month.
The amount raised included 300 million euros in non-competitive bids.
In the rollover, T-bill holders renew their positions instead of getting paid on the maturing paper they hold.
The sale's bid-to-cover ratio was 1.30, unchanged from a previous auction in February. Settlement will be on March 11.