"No arrests and detentions have been made so far in the case. However, we have interrogated many. We are doing our professional best to nab the culprit," Joint Police Commissioner Hemant Nimbalkar told PTI.
The school staff members were being questioned and the CCTV footage being examined by police, Nimbalkar said.
A criminal case has been registered under the Protection of Children from Sexual Offences (POCSO) Act 2012 and IPC section 376 (rape) on a complaint from the father of the child.
Meanwhile, Karnataka Public Instruction Commissioner Mohammed Mohsin told reporters that the education department would file a criminal case against "Orchids, The International School" for violating norms stipulated under Karnataka Education Act.
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"The school has permission to teach in Kannada up to fifth class. But it is teaching in English up to seventh class," Mohsin said.
It has also been teaching CBSE syllabus without prior permission for the same. "The school is not affiliated to the Central Board of Secondary Education (CBSE)," he said.