Iraqi forces and Kurdish forces cooperate in the search for suspected supporters of ISIL.

ISIL threatens to close in on Kirkuk, an oil rich city in Iraq, causing Iraqi forces to tighten security around the city in fear of being attacked.

Officials deny Sunni Arabs are being singled out. They say those who are innocent will be released but for now, the evidence gathered is enough to take them in for questioning.

Al Jazeera's Zeina Khodr joined the Iraqi police and Kurdish forces on one of their security operations in Kirkuk, Iraq.
Al Jazeera's Zeina Khodr joined the Iraqi police and Kurdish forces on one of their security operations in Kirkuk, Iraq.

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