Somali pirates have released a Greek freighter, the MV Capt Stefanos, which they hijacked in September, a regional maritime organization announced.

The Stefanos, flying the Bahamas flag and with a crew of 17 Filipinos, one Chinese and a Ukrainian, was carrying coal when it was seized.

It is unclear as to whether or not a ransom was paid, but, according to officials, the crew members’ state of health is estimated as satisfactory.

The European Union has launched an anti-piracy naval operation off Somalia involving warships from Greece, Britain and France.