Third ship of Classic International Cruises, the troubled Portuguese operator of five second hand vessels, has been detained due to unpaid bills, a French media report says.

The 1965 built Arion has been stopped at the Montenegrin port of Kotor. Before this, Athena and Princess Danae were held in Marseilles in France, reportedly due to unpaid bunker bills, tourmag.com says on its website.

Princess Daphne is in the Spanish port of Arrecife, according to Marinetraffic.com, the shipping movement website, while Funchal, the fifth vessel of the company, is in Lisbon according to the same source.