DUBAI: Projectiles struck a ship in the narrow Strait of Hormuz, the British military said Monday, the second such attack in hours as tensions remain high between Iran and the United States.

The British military's United Kingdom Maritime Trade Operations center issued the alert, saying a tanker had been targeted off Fujairah, United Arab Emirates, in the strait around 11:40 pm Sunday.

It described the tanker has been struck by “unknown projectiles."

“All crew reported safe,” the centre said. “No environmental impact reported.”

Another ship came under attack in the strait on Sunday.