Dear @Deepak123 ,
Understandably, you want to file FIRs. However, you should file them in the correct jurisdictions.
- For the property dispute against Arun Dahlan in Saharsa, Bihar: You should file an online police complaint with the Bihar Police website.
- For the money forgery against Sandeep in Maharashtra: You should file an online complaint with the Maharashtra Police website.
The police will then assess your complaints and decide if they warrant an FIR or e-FIR. Filing complaints in Bangalore would not be appropriate as the incidents occurred in other states.
If you still want, use the CCTNS portal of the Karnataka Police to lodge an online e-FIR. Read this: How can I file police complaint or e-FIR to Karnataka Police?