The militants, among them suicide bombers, attacked the former Kirkuk police station and occupied it for a few hours before they were driven out by special anti-terrorism forces.

At least three car bombs were detonated by the group and early in the confrontations Sarhad Qadir, Kirkuk police chief asked residents of the city “to stay indoors until the situation is under control,”

“ISIS attacked the security building and former emergency police station,” Qadir told Rudaw. He added: “Some people in Kirkuk have been collaborating with ISIS,”

Four ISIS militants who attacked the Dubiz Dibiz power plant were killed by the security forces, Kirkuk Governor Najmaldin Karim told.

Kirkuk Governor  believed that some members of the sleeper cells may have come to the city among waves of refugees who recently fled Hawija to Kirkuk.

The most intense part of the ISIS attack took place in the town of Dubiz where 10 employees of the town's power station were killed.

According to the mayor, Abdullah Nuraddin, three suicide bombers attacked the station where two of them blew themselves up while the third was gunned down by the security forces.

The ISIS militants, whose images have been caught on surveillance cameras, also attacked the Domiz neighborhood security office in Kirkuk, Halo Najat, a security chief told Rudaw.

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