The three-month paper was sold at a yield of 2.70 percent, unchanged from a previous sale earlier this month. The amount raised included 300 million euros in non-competitive bids.

The sale's bid-to-cover ratio was 1.30, unchanged from the  previous auction.

In a rollover T-bill holders renew their positions instead of getting paid on the maturing paper they hold. The settlement date of the new bills is June 16.