Engage a good lawyer in you area court, you will get all the details. For any further information, feel free to contact me on my e-mail "firstname.lastname@example.org"
Shubham Pabbi & Associates
since you know the FIR details it is advisable that you get the case details from the concerned court by engaging a lawyer and if the case still exist then you can ask the lawyer to make a put up application along with the NOC application for passport from the same court and after obtaining the NOC deposit the same with the police conerned keeping a record copy with you. In case the chargesheet do not name you or you were a juvenile at the time of the occurance of crime then you can find hte content in the chargesheet. if the police deny to issue you the clearance then file a Writ of mandamus against the police before the high court and your passport will get issued immediately.
You will have a check with police about wat case it was and if the case is alive will have to get a noc from concern Court or if the case is disposed then get such a report