The investigators wrote in their opinion that during their interrogation, the mother's other children refused to divulge any relevant information due to the involvement of elements within the capital's haredi community.
The children were interrogated for four hours on Thursday at Jerusalem's Protection Center for Youth and Children.
The mother, Ynet reported, gave her permission to the interrogation providing that her children be accompanied by someone on her behalf.
In light of the investigators' opinion, attorneys Maayan Oren-Rimon and Tal Wisman-Ben Shahar, for the prosecution, asked Jerusalem District Court Judge Moshe Ravid to issue a ruling regarding the danger they claim the mother poses to her other children.
The attorneys are also expected to ask the court to order Social Services to prepare a brief on the possible risk to the children and schedule a hearing on the matter as soon as possible.
Last week Judge Ravid determined that the boy who was allegedly abused, who is now three-years-old, remain at his uncle's home. The mother will be permitted to visit him only with the accompaniment of a social worker and a psychologist, ruled the judge, adding that she will be able to remain in continuous contact with her son by phone.