El-Rufai, while justifying the ban of the group, said Shiite members and their leader do not respect constituted authorities.
Also, he said the sect does not recognise him as the Governor of Kaduna.
Speaking to journalists on Sunday, November 27, El-Rufai said the group was outlawed by the state government because its leader Sheihk Ibrahim El Zakzaky and members refused to respect constituted authorities.
He said the state received the report of the Judicial Commission of Inquiry that looked into the clashes between the IMN and army which concluded that the IMN poses a threat to the peace, security and good governance of Kaduna State.
"The IMN does not recognise the constitution of Nigeria, they do not recognise Buhari as president of Nigeria, they do not recognise me as the Governor of Kaduna state. Because they have their governor, yes, they had, I think he was killed during the clash," El-Rufai said.
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The Governor added that apart from being an illegal religious organisation, the group is known for harassing and intimidating members of the public with impunity for several years.