Kurdish security forces seized two major oilfields in Kirkuk Friday after they expelled Arab workers and replaced them with Kurds, the Iraqi government said in a statement.
The statement issued by the country's oil ministry said that Kurdish forces, known as Peshmerga, stormed the crude oil production facilities of Kirkuk and Bay Hassan at dawn and took control of them, Xinhua reported.
The ministry warned the Kurdish region of the consequences of such "irresponsible" move, which is considered as a violation of the constitution and national wealth, as well as "an ignorance to the federal authority and a threat to national unity".
The ministry appealed to the "wise men from the Kurds about the necessity to understand the seriousness of the situation and to instruct those people responsible for this uncontrolled action to withdraw the armed force from these oilfields and evacuate immediately to avoid serious consequences", according to the statement.
The Kurdish move is the latest amid escalating tension between Baghdad and the semi-autonomous region of Kurdistan after the Kurds took control of the disputed areas adjacent to the country's northern region, including Kirkuk.
The disputed areas are mainly ethnically mixed with Kurds, Arabs, Turkmans and other minorities. The Kurds demanded expansion of their autonomous region in northern Iraq to include the oil-rich province of Kirkuk and other areas in the Iraqi provinces of Nineveh, Salahudin and Diyala.