A tanker was struck by two projectiles approximately 17 nautical miles north of Qatar's Ras Laffan industrial hub on Wednesday, the UK Maritime Trade Operations (UKMTO) office confirmed.
One projectile caused a fire that has since been extinguished, and a second remains unexploded inside the vessel's engine room.
The crew is reported to be safe, and there is no environmental impact.
UKMTO said in its updated warning that the vessel sustained damage to the hull above the waterline on its port side.
Relevant authorities are investigating the nature of the projectiles and the circumstances of the incident. UKMTO said it is unable to confirm the source of the projectiles and advised all vessels transiting the area to exercise caution and report any suspicious activity.
Qatari authorities confirmed Wednesday that an Iranian cruise missile struck a contracted oil tanker earlier today. While one vessel was hit, officials reported that two additional missiles were successfully intercepted.
The missile struck the vessel off the Qatari coast while it was operating under contract for state-owned QatarEnergy. According to the ministry, all 21 crew members were safely evacuated, and no casualties have been reported.
In a statement, the Defense Ministry said two other missiles were intercepted.
QatarEnergy said there was no environmental impact from the tanker attack.
"Three cruise missiles in total were launched by Tehran towards the country," the defense ministry said on X.
"Two of the missiles were intercepted, but the third missile struck a QatarEnergy oil tanker in Qatari economic waters," the statement added.
The incident comes amid heightened regional tensions as the U.S. and Israel have been carrying out airstrikes on Iran since Feb. 28, killing over 1,340 people.
Iran has retaliated with drone and missile strikes targeting Israel, Jordan, Iraq, and Gulf countries hosting U.S. military assets.