A tanker was struck by an unidentified projectile off Saudi Arabia’s Red Sea coast, resulting in a fire on the vessel’s main deck, the United Kingdom Maritime Trade Operations said on Monday.

The incident occurred 63 nautical miles west of Yanbu, Saudi Arabia’s principal Red Sea oil port. UKMTO reported that all members of the tanker’s crew were safe and accounted for. No environmental impact had been reported following the strike.

The available information did not identify the tanker, its flag, cargo, ownership or destination. It also did not specify the nature or origin of the projectile, the extent of damage to the vessel, or whether the main-deck fire had been extinguished. No confirmation or comment was available from Saudi authorities.

Yanbu is a major outlet for Saudi oil exports, handling the loading of millions of barrels per day. The port has taken on increased importance as a route for Saudi crude shipments avoiding the Strait of Hormuz, which the source report said has been blockaded by Iran.

Maritime traffic connected to Yanbu has also faced disruption since Yemen’s Iran-aligned Houthi movement declared a blockade on Saudi-linked vessels in the Red Sea last month. The group has conducted attacks against Saudi oil facilities and shipping in the region in recent weeks, according to the report.

The Houthis also claimed in July that they had targeted facilities belonging to Saudi oil company Aramco in Yanbu. However, the report did not attribute the latest tanker incident to any party, and no claim of responsibility was cited.

The strike adds to security concerns affecting commercial shipping and energy logistics in the Red Sea. Based on the information released by UKMTO, the immediate human and environmental consequences were limited, with the crew reported safe and no pollution identified. Further details concerning the tanker’s condition and subsequent movements were not provided.