Sinha said that the 346-page charge sheet had been filed within the stipulated 90 days after the arrest of the suspended school principal, but a supplementary charge sheet would be filed in due course of time as the probe was still on.
As many as 23 students, all minors, had died after consuming poisonous midday meal in the school and several others were taken ill and brought to the Patna Medical College and Hospital (PMCH) on July 16 last.
