
"At approximately 0900 (GMT) on 28 March, the Crude Oil Tanker the MV ZIRKU was pirated approximately 250 nautical miles southeast of Salalah in the eastern part of the Gulf of Aden," EU Navfor said on its website.
It was not immediately clear whether the tanker, which the website said was Kuwaiti-owned, was fully laden with crude. Sudan is an oil-exporting country.
In Kuwait, officials denied the tanker was Kuwaiti-owned.