ATHENS, Sept 22 (Reuters) - Greece received two binding bids for a majority stake in its northern port of Alexandroupolis, the country's privatisations agency HRADF said on Thursday. The bidders for a 67% stake in the port were Quintana Infrastructure and Development through Liberty Port Holdings Single Member, and International Port Investments Alexandroupolis, a joint venture of Black Summit Financial Group, Euroports, EFA Group and GEK Terna (HRMr.AT), the agency said in a statement. Register now for FREE unlimited access to Reuters.com RegisterThe bidders were among four investors that had been shortlisted last year for the sale. In a separate announcement after unsealing their bids on Thursday, the agency said it has asked all three bidders to raise their offers. Register now for FREE unlimited access to Reuters.com RegisterReporting by Angeliki Koutantou; Editing by Mark PorterOur Standards: The Thomson Reuters Trust Principles.

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