What happened

Iranian state media (IRNA, Tasnim, Press TV) said the IRGC Navy struck the Togo-flagged oil tanker Trend in the Strait of Hormuz on 17 September for attempting an "illegal passage" outside Iran's preferred shipping corridor, and that the tanker caught fire and was halted. The UKMTO separately reported a security incident in the same general area involving a tanker struck by an unknown projectile, with a fire that was extinguished and all crew reported safe, but did not identify the vessel, so independent confirmation that this is the same ship is incomplete. Details on the tanker's cargo, crew and any casualties were not immediately available. No fatalities were reported by any source. Strait transit reportedly fell sharply that day, with only 4 vessels crossing versus a roughly 16-vessel ten-day average.

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.