The Gurugram police on Wednesday detained Ryan International School gardener Harpal Singh, who is a key witness in the murder of student Pradyuman Thakur, and is likely to arrest some more persons, a senior SIT officer said.
The 7-year-old boy was found with his throat slit in the washroom of the school last Friday. School bus conductor Ashok Kumar has emerged as the prime suspect and has been arrested.
“The SIT does not want to leave out a single piece of evidence which can be important and work as a key breakthrough for us to solve this case. With three days left for submission of charge sheet in court, we have got possible positive leads against ... Ashok Kumar,” a senior SIT officer told PTI.
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SIT teams on Wednesday searched the school here for clues while a CBSE panel also inspected the premises to examine loopholes in security arrangements.