They also sought "clear and unambiguous guidelines" for conducting anti-Maoist operations.
In a press statement, the Women Against Sexual Violence and State Repression (WSS) called the findings "the tip of the iceberg".
"The cases where FIRs have been filed may be only the tip of the iceberg. Reports of sexual violence by security forces continue to come in from other villages in the Bastar belt where search and combing operations were carried out."
According to NHRC, of the total 34 victims mentioned in the FIRs, the commission could record the statements of only 14 victims and the statement of 20 victims are yet to be recorded.
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WSS expressed hope that the NHRC probe would put an end to the "reign of terror" unleashed by police and security forces.
"The NHRC order is an explicit acknowledgement of grievous rights abuses, and gives us reason to hope not only of justice for the violated women, but an end to the reign of terror created by the police and security forces in the name of anti-Maoist operations," the press statement said.