The United Kingdom Maritime Trade Operations (UKMTO) said on Tuesday it was aware of a non-piracy "incident" underway off the coast of Fujairah, part of the United Arab Emirates.

The warning notice, based on a third-party source, advised vessels in the area to exercise extreme caution.

The United States, Israel, and Britain have blamed Tehran for an attack last week on an Israeli-managed tanker off the coast of Oman.