The National Investigation Agency (NIA), probing the case relating to the chopping off the right hand of a lecturer, allegedly by radical outfit, Popular Front of India, on Friday filed an FIR before the CBI special court in Kochi.
Lecturer T J Joseph was attacked on July 4 last year by suspected PFI activists for preparing a question paper which allegedly had derogatory references to Prophet Mohammed.
Police, which first investigated the case, had in January this year filed a charge sheet against 27 accused in the attack.
Of the total 54 accused in the case, the other 27 accused are presently absconding.
Cases had been registered against the accused under various sections of the IPC including 120, 143, 148 (riot, unlawful assembly, 120(B) (Criminal conspiracy) 323 (Hurt) and 307 (attempt to murder), Sect 3 of Explosive Substance Act and various sections of unlawful activities (Prevention) Act.
The court had earlier ordered issue of a non-bailable warrant against the 27 accused who are yet to be arrested.