A Greek ship operator has denied one of its tankers has been involved in a seizure by Saudi Arabia off Yemen.

Yemen Petroleum Co (YPC) had claimed that Saudi-led coalition forces had stopped the 47,000-dwt Fos Power (built 2007) from docking in Hodeidah, controlled by Houthi rebels.

The ship was carrying 27,000 tonnes of diesel and a fuel oil called mazut "for the Yemeni people", according to YPC.