Police said an FIR under IPC Section 338 (causing grievous hurt by act endangering life or personal safety of others) has been filed against the Inspector of Neelangarai police station.
Meanwhile, the inquiry by Revenue Divisional Officer Indrajit into the incident is presently underway.
Joint Commissioner (South) Thirugnanam had said yesterday that the incident occurred when the inspector (crime) was questioning the boy and the officer's pistol went off "accidentally".