Investigation into the paper leak case has led the Bhiwandi police to suspect that around 60 per cent of the schools there did not follow the SSC board norms while breaking open the sealed question paper envelopes.

According to board rules, it is mandatory to obtain a signature of the custodian of every centre, along with the witnesses, while breaking the seal open. The Bhiwandi police have thus asked the two main board centres in Bhiwandi - Padmashree Annasaheb Jadhav School and Konkan Muslim Education Society School - from where other centres receive the papers to submit details of this norm being followed.