The police said 33 other suspects have been charged with criminal conspiracy and unlawful assembly in relation to the case.
The police commissioner said investigations were ongoing to apprehend other members of the criminal network.
The command urged residents to remain calm as the situation was under control.
The Kaduna police command says it has commenced physical and credentials screening of applicants for recruitment.
The terrorists kidnapped a Catholic catechist, his pregnant wife and about 30 other persons.
The police said the suspects were cooperating with investigators to provide information that would aid further arrests.
Mr Hassan said the humanitarian gesture was aimed at easing hardship and spreading goodwill during the festive period.
The CP said the suspects would be charged to court on completion of investigation.
The CP said he had lectured the constables on the importance of ethical policing, professionalism, discipline, and dedication to duty.
The police said the measure was part of the security arrangements to ensure successful bye-elections in the affected areas.
