An Iraqi man prints a flag of Kurdistan, in Arbil,

The council in Kirkuk, an ethnically mixed region of northern Iraq under Baghdad's control, voted Tuesday to take part in next month's Kurdish independence referendum, councillors said.

The central government in Baghdad is strongly opposed to Iraqi Kurdistan's planned September 25 referendum, which is non-binding but could lead to independence.

Kirkuk, an oil-rich province made up of Kurds, Arabs and Turkmen, is under Baghdad's control but is claimed by the autonomous Iraqi Kurdistan region.

In Tuesday's vote, 22 of the 24 present councillors in the 41-member Kirkuk council voted in favour of holding the referendum, said councillor Hala Nur Eddine.

Speaking to journalists afterwards, Kirkuk governor Najm Eddine Karim described the vote as a "historic event".

But Iraqi Prime Minister Haider al-Abadi denounced the decision, which he called "not serious", while his spokesman Saad al-Hadithi said the vote was "illegal and unconstitutional".

"Provinces that don't belong to the autonomous region (of Kurdistan) can't impose decisions without the federal government's approval, and Kirkuk is one of these regions," Hadithi said.

Arshad al-Salhi, a lawmaker and the head of the Iraqi Turkmen Front, said the council's decision "will create new conflicts in Iraq".

The plans to hold the referendum have been criticised by neighbouring Turkey and Iran, which have large Kurdish minority populations.

The Turkish foreign ministry said in a statement that the Kirkuk's council decision was "another link in a chain of mistakes" and "once more a serious violation of the Iraqi constitution."

There are also doubts about the vote among the five million Iraqi Kurds, with some calling for it to be postponed.

The United States has made the same demand, saying the referendum could distract from the fight against the Islamic State group by stoking tensions between the Kurds, and Arabs and Turkmen.

The dispute over Kirkuk is seen as a reason for delays to the launch of an Iraqi-Kurdish military offensive aimed at recapturing the city of Hawija from IS.

Source: AFP