RANCHI, June 12 -- Manbahal Mahto, father of the 13-year-old boy who died at a school in 2016, has filed a formal protest petition in a special CBI court to challenge the agency's final closure report. The investigative agency recently concluded that the teenager's controversial 2016 death at Sapphire International School in Ranchi was a tragic accident rather than a criminal conspiracy.

This finding directly contradicts police's long-standing stance that the boy was murdered. Following preliminary arguments on Thursday and Friday, the matter is expected to be heard in the special court on Thursday afternoon.

The Class 7 student was found with severe injuries outside a teacher's quarter on the campus. The incident occurred in the interv...