What happened

UKMTO reported an "encounter" between a tanker and military forces of an unidentified country in the Gulf of Oman, advising nearby vessels to exercise caution and report suspicious activity. Authorities were aware and relevant investigations remained ongoing. The notice did not identify the vessel, the military forces involved, the nature of the encounter, or any damage or casualties. It is therefore classified as an investigating shipping disruption, not a confirmed attack.

When cited sources give different casualty, damage or spill figures for this event, they’re reported side by side above rather than merged into one number. See how confidence levels work.