Documents submitted in court by police

I am not a petitioner nor defendant in a criminal case. But as a concerned citizen I want to know what documents/proofs by way of photogrphs have been submitted by police for prosection under IPC 304a in a case I have taken interest as a concerned citizen. Please let me know how to proceed. An RTI application has not been attended to by the concerned PS, my appeal with State IC is pending. But I want to approach the Magistrate Court