A Technomar-linked container ship has been attacked, with six seafarers reportedly kidnapped.

According to reports from security sources, the incident occurred approximately 89 km southwest of Luba, on Equatorial Guinea's island of Boiko with Athens-based Technomar confirming the ship was the 5,551-teu Tonsberg (built 2001).

"Technomar is working to resolve this incident as their top priority," the company said.