Greece's privatisation agency (HRADF) asked on Friday for improved financial bids from shortlisted investors seeking to buy a majority stake in its second-largest port.
Athens got last month three offers for the sale of a 67 percent stake in Thessaloniki Port, which is required as part of its international bailout.
The investors are Philippines-based International Container Terminal Services (ICTS), Dubai-based P&O Steam Navigation Company (DP World) and German private equity firm Deutsche Invest Equity Partners which is bidding jointly with France's Terminal Link SAS.
(Reporting by Angeliki Koutantou)