Ten Turkish sailors on a cargo ship were kidnapped by armed men off the coast of Nigeria, Turkish state media reported Tuesday.

State news agency Anadolu, said The Turkish-flagged Paksoy-I cargo vessel, operated by shipping company Kadioglu Denizcilik, was attacked on Monday night.

Turkish-flagged Paksoy-I cargo vessel

A Kadioglu Denizcilik employee who wished to remain anonymous said 10 Turkish sailors were kidnapped among 18 crew members on board the ship.

The employee denied local media reports that two sailors had since been freed.

A company statement cited by Turkish media said the ship was attacked by “pirates” on its way from Cameroon to the Ivory Coast. It was carrying no freight.

Turkey’s ruling party spokesman Omer Celik said a ship with Turkish crew was “seized” off Nigeria, but did not provide further details.

Celik said Turkish authorities were following the issue closely.