UKMTO says it received a report of an incident 136NM east of Mukalla, Yemen

A UKMTO incident notification is the standard first entry point for Red Sea and Gulf of Aden maritime security events: the agency collects and relays reports before any confirmation of the nature of the incident, and historically many such reports are later classified as suspicious activity, small craft approaches, or false alarms rather than confirmed attacks. The distinction that matters is between a sighting and a strike: confirmed missile or drone hits on commercial tonnage have tended to push war risk premia, insurance rates, and freight costs, while unconfirmed reports have typically faded within the session. Positioning east of Mukalla puts the location toward the Gulf of Aden end of the corridor, where the pattern of harassment has been similar to the Bab el-Mandeb lane but with fewer confirmed hits. The follow-ons are the UKMTO update sequence, any flag state or owner confirmation, and whether operators or insurers begin rerouting, since it is the behavioural response of shipping rather than the incident itself that transmits into freight benchmarks and crude and product tanker rates. As a first notice, this is informational only.