A tanker ship caught fire near the Strait of Hormuz after a strike by an unknown projectile, United Kingdom Maritime Trade Operations says according to Reuters.

The tanker was 31 nautical miles (57.4km) northwest of Dubai when the projectile hit the tanker on its starboard side, UKMTO said, citing a report at 2020 UTC from the vessel’s company security officer.

The crew was safe and accounted for and no environmental impact was reported, UKMTO said.