Based on the provided legal document, the key legal points are as follows:

1. The registration of a second FIR concerning the same incident and facts is generally not permissible under the Criminal Procedure Code (Cr.P.C.) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) .

2. The First Information Report (FIR) is the earliest and primary document that sets the criminal law into motion; subsequent information related to the same incident cannot be treated as a new FIR if it pertains to the same facts (!) (!) (!) (!) (!) .

3. The investigation should be based on the initial FIR, and any subsequent information should be incorporated through further reports under the relevant provisions of the Cr.P.C., rather than by registering a new FIR (!) (!) (!) (!) .

4. The police have a statutory right to investigate cognizable offences, but this power is not unlimited. Investigations must be conducted within the bounds of law, and the courts can interdict investigations that transgress statutory powers to prevent abuse or ensure justice (!) (!) (!) (!) .

5. The report and findings of a Commission of Inquiry are advisory and do not possess judicial or evidentiary power. While the government may accept such reports, courts are not bound by them and must decide cases based on evidence and law (!) (!) (!) (!) (!) .

6. The investigation process must adhere to the statutory scheme, and any attempt to initiate a fresh investigation based on a second FIR for the same incident, after investigation has already commenced or concluded, can be challenged and potentially quashed (!) (!) (!) (!) .

7. The court has the authority to quash investigations or proceedings if they are found to be irregular, illegal, or an abuse of process, including cases where multiple FIRs are registered for the same incident without lawful justification (!) (!) (!) .

8. The investigation of a cognizable offence can be further pursued through reports under Section 173(8) Cr.P.C., which allows for further investigation and reporting without the necessity of registering a new FIR, provided it relates to the same incident and offences (!) (!) (!) .

9. The courts aim to maintain a balance between protecting citizens' fundamental rights and allowing police investigative powers, ensuring investigations are conducted lawfully without infringing on rights or encouraging misuse of legal procedures (!) (!) .

10. Any investigation or proceedings initiated in violation of these principles, especially involving multiple FIRs for the same incident, can be deemed invalid and subject to judicial review and quashing (!) (!) .

These points underscore the importance of adhering to the procedural safeguards and statutory provisions governing FIR registration and investigation, ensuring that investigations are lawful, non-duplicative, and free from abuse or irregularities.