Pirates boarded an unidentified ship while it was underway around 21 nautical miles south of Nigerian Coast on May 17.
Following the attack, pirates escaped.
The remaining crew sailed the ship to Bonny anchorage.
The Nigerian Navy is investigating the case, ICC IMB said.
Contacted relevant parties for more details on the incident, however, they are yet to reply.
The kidnapping occurred just a day after a foiled attack against bulk carrier MV Lord Mountbatten while the vessel was sailing some 230 nautical miles southwest of Salalah, the Gulf of Aden.