Iranian authorities said they rescued 21 Sri Lankan crewmen from a Cook Islands-flagged tanker sinking in the Gulf of Oman, the state news agency IRNA reported on Wednesday.

The unnamed tanker suffered damage about 30 miles (50 km) off the coast of Jask in Iran due to a storm, the report said.

Five of the crewmen received medical care from Jask emergency services and were in good physical condition, the report added. It did not say when the rescue took place.