Police in eastern India have filed charges against a school principal and her husband for the July deaths of 23 pupils who consumed poisoned meals.
Meena Devi and Arjun Rai were charged with various offences including murder, attempted murder and causing hurt by means of poison, police said on Monday.
The deaths at the primary school in Bihar state's Saran district caused outrage across the country.
The tragedy raised questions about the safety and standards of the national scheme to provide free midday meals to tackle malnutrition and encourage attendance.
The charges were filed in court on Sunday evening.
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"The charge sheet mentions that Rai kept pesticide in a room where items for the midday meals were stored," investigator Raj Kaushal said.
"Witnesses said the food was intentionally cooked with the pesticide. We found adequate evidence against the accused during our investigations," he said.
Devi and her husband are in custody.
Forensic tests confirmed the presence of pesticide monocrotophos in the meals, Kaushal said.
