A viral selfie video shows Perupogu Kranthi Kumar blaming Inspector Nagaraju for his suicide.
Inspector Nagaraju is also implicated in the disappearance and alleged death of 23-year-old Gade Sai Krishna.
The AP government has suspended the inspector following widespread public protests and civil society pressure.
Police have registered an FIR against the accused under BNS sections for murder and wrongful confinement.