The United Kingdom Maritime Trade Operations (UKMTO) Centre has said it received a report of a “suspicious approach 84 nautical miles southwest of Yemen’s Al Mukalla.

“The master of a bulk carrier has reported being approached to within 500 metres by 1 green-hulled skiff which was accompanied by 1 white fishing vessel,” UKMTO said.

It advised vessels to transit with cautino and report any suspicious activity to UKMTO.