They include soldiers, policemen, one prison official, a member of staff, Borno Ministry of Agriculture and two members of the Civilian Joint Task Force, Borno State.
The Inspector-General of Police, Ibrahim Idris, disclosed this on Tuesday, in Abuja, adding that if indicted the policemen and other security operatives involved in the alleged crime would be dismissed and prosecuted after investigation.
A Non-Governmental Organisation, Human Rights Watch, had in its report accused camp officials, vigilance groups, soldiers and policemen of engaging in sexual harassment of women and teenagers in IDP camps in Borno, Yobe and Adamawa states.
A few of the victims told Human Rights Watch that they were drugged and raped while 37 were coerced into sex through false marriage promises, material and financial assistance.
Shocked by the allegations, President Muhammadu Buhari directed the IG and the state governments to carry out a thorough investigation into the alleged incidents.
The IG however said the police would liaise with the Army and the Air Force to make their indicted officials available for interrogation.