UKMTO has received a report of an incident 13NM southwest of Al Mukha, Yemen.
The Master of a merchant vessel reports being approached by 12 small craft, consisting of a mixture of fast boats and smaller kayak-type boats (some were observed as uncrewed). The closest point of approach of the 12-small craft to the merchant vessel was 1.5 nautical miles. The 12 small boats remained in the vicinity of the merchant vessel for approximately one hour before leaving the area. The vessel and crew are reported safe, and the vessel is proceeding to its next port of call.
Authorities are investigating.
Vessels are advised to transit with caution and report any suspicious activity to UKMTO.
Source : UKMTO