Baghdad - Iraqi Prime Minister Nuri al-Maliki demanded Wednesday the arrest of all those who were behind the kidnapping operation of 100 government employees on Tuesday.

Al-Maliki made the demand while meeting with Baghdad university students and professors.

"I guarantee you that universities will keep on working although you are now facing challenges, but we will not be easy on them," the Iraqi leader said.

"I will not be satisfied if they only released the kidnapped, because I personally want those who were behind it to face the law, and the law will make an example of them, it is an open war between us and them," he added.

More than 100 government employees were kidnapped Tuesday in a brazen raid on a Baghdad research institute by militants in police uniforms.

In the meantime, more than 40 of those have been released while the fate of the remaining kidnap victims remained unclear.

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