Introduction
Supplementary charge-sheets in India are governed by Section 193(9) BNSS, 2023 (corresponding to Section 173(8) CrPC). This provision empowers the police to conduct further investigation and file a supplementary charge-sheet when new evidence emerges, even after submission of the initial charge-sheet under Section 193(3) BNSS. While it is desirable that such investigation be completed promptly, courts may extend the time depending on the facts of the case.
During trial, permission of the trial court is required. The supplementary report must be forwarded to the magistrate in the prescribed form, and the provisions applicable to the original charge sheet apply equally to it. Importantly, the court must consider the original and supplementary charge sheets together in determining whether a prima facie case exists. This mechanism ensures continuity of investigation, incorporation of fresh evidence, and a fair trial process while safeguarding the rights of the accused.
Further Investigation
Further Investigation Under Section 173(8) CrPC / Section 193(9) BNSS
Further Investigation under Section 173(8) CrPC / Section 193(9) BNSS allows police to continue probing a case even after submitting a report to the court, if new evidence emerges. Introduced in 1973 (absent in the 1898 Code), this provision—now Section 193(9) BNSS, 2023—requires the police to inform the court through a supplementary charge-sheet, which is governed by the same rules as the original report. The power to conduct further investigation lies with the police under Section 193(9), while a magistrate can also order further investigation under Section 175(3) BNSS. This framework ensures continuity of investigation, incorporation of fresh evidence, and the pursuit of truth without procedural barriers.
Can a Senior Superintendent of Police (SSP) Order Further Investigation?
Yes. Under Section 193(9) BNSS, 2023, the police have the statutory power to conduct further investigation even after filing the charge-sheet, without needing prior permission of the Magistrate. A Senior Superintendent of Police (SSP) or any superior officer can direct such further investigation upon discovery of fresh evidence, exercising supervisory powers under Section 30 BNSS read with Section 193(9).
However, once the trial has commenced, further investigation requires the express permission of the trial court.
Can an Accused Request the Court to Order Further Investigation?
Yes. An accused can file an application before the court seeking further investigation under Section 193(9) BNSS.
If the accused demonstrates that fresh evidence, new witnesses, or other relevant material has emerged which is essential for a fair trial or to establish their defence, the court may, in its discretion and in the interest of justice, direct the police to conduct further investigation.
The court will hear the prosecution and defense before passing any order. If allowed, the police must carry out the investigation and file a supplementary report (charge sheet). The court’s power in this regard is discretionary and guided by the need to ensure a fair and complete adjudication.
Note: While police can initiate further investigation independently in many cases, the accused’s right to seek court intervention is well-recognised to prevent miscarriage of justice.
Can a Complainant Request the Court for Further Investigation?
Yes. A complainant can file an application or protest petition before the Magistrate/Judge seeking further investigation under Section 193(9) BNSS (corresponding to Section 173(8) CrPC) if they believe the initial investigation was incomplete, biased, or failed to identify the real culprits.
The court evaluates the application on a prima facie basis. If satisfied that further probe is necessary in the interest of justice, it may direct the police to conduct additional investigation, collect fresh evidence, or examine new witnesses.
Such orders can be passed even after filing of the charge sheet. The court’s power under Sections 175(3), 175(4), and 193(9) BNSS ensures correction of investigative lapses while balancing the rights of the accused, who must be heard and informed of developments.
The ultimate objective is to prevent miscarriage of justice and ensure a fair trial.
Role of the Court on Receipt of Final Report Under Section 193(3) BNSS
When the police submit a final report (charge sheet) to the magistrate/judge, the following options are available:
A. Where the Report States That an Offence Has Been Committed
- Accept the report and take cognizance of the offense, then issue the process.
- Disagree with the report and drop the proceedings.
- Direct further investigation under Section 193(9) BNSS and call for a supplementary report.
B. Where the Report States That No Offence Appears to Have Been Committed (Closure Report)
- Accept the report and drop the proceedings.
- Disagree with the report, take cognizance of the offense if prima facie grounds exist, and issue a process.
- Direct further investigation under Section 193(9) BNSS.
Judicial Scrutiny of Police Reports
This ensures judicial scrutiny and prevents mechanical acceptance or rejection of police reports.
Key Points on Further Investigation Under BNSS
| Issue | Position |
|---|---|
| Further Investigation | Permitted under Section 193(9) BNSS. |
| Supplementary Charge Sheet | Can be filed when fresh evidence emerges. |
| SSP’s Role | An SSP or superior police officer can direct further investigation in accordance with the statutory framework. |
| During Trial | Permission of the trial court is required for further investigation. |
| Accused’s Request | An accused can seek court intervention for further investigation. |
| Complainant’s Request | A complainant can seek further investigation through an application or protest petition. |
| Closure Report | The court may accept the report, disagree with it, and take cognizance where appropriate, or direct further investigation. |
| Purpose | To ensure a complete investigation, incorporate fresh evidence, prevent miscarriage of justice, and safeguard a fair trial. |
Key Court Judgments on Section 173(8) CrPC / Section 193(9) BNSS & Supplementary Charge Sheet
1. Further Investigation Is Permissible Even After Cognizance
Further investigation is permissible even after cognizance and can extend during or after trial. In Prabhavathiamma v. State of Kerala (2008), the Court held that further investigation under Section 173(8) CrPC / Section 193(9) BNSS can continue post-cognizance.
2. Further Investigation After Filing the Final Report
Police can conduct further investigation even after filing the final report, but not fresh/de novo/re-investigation. The Supreme Court in Ramachandran v. R. Udhayakumar clarified that after completion of investigation under Section 173(2)/193(3) BNSS, police retain the power only for further investigation under Section 173(8)/193(9) BNSS, not a fresh probe.
3. Courts Should Not Ordinarily Interfere With Further Investigation
Courts should not ordinarily interfere with the statutory power of the investigating agency under Section 173(8) CrPC / 193(9) BNSS. In Popular Muthiah v. State, the Supreme Court held that when this power is exercised, courts should not interfere or direct investigation in a particular manner or by a specific agency.
4. High Court Inherent Powers After Filing of Charge Sheet
Once a charge-sheet has been filed, it does not affect or limit the inherent powers of the High Court under Section 482 CrPC / Section 528 BNSS to order further investigation or reinvestigation in appropriate cases to secure the ends of justice.
In State of Punjab v. CBI, the Supreme Court upheld the High Court’s order directing a fresh investigation by the CBI, noting that the involvement of senior police officers and political functionaries warranted an independent probe beyond the local police, and that filing of the charge-sheet did not curtail the High Court’s powers under Section 482 CrPC.
5. Court Need Not Wait for FSL Result or Supplementary Charge Sheet
A Court is not required to wait for FSL result or supplementary charge-sheet if cognizance can be taken on the basis of the charge sheet filed by the police.
The Delhi High Court has held that a court need not delay criminal proceedings awaiting the Forensic Science Laboratory (FSL) report or a supplementary charge-sheet, if the initial charge-sheet filed by the police discloses sufficient material for taking cognizance. This clarification was given by Justice Mukta Gupta in Madan Lal Chowatia v. State (decided on 27.03.2019).
6. Charge Sheet and Supplementary Charge Sheet to Be Considered Jointly
The Supreme Court in Luckose Zachariah @ Luckose v. Joseph Joseph has held that while deciding whether an accused has committed an offence, the Magistrate must consider both the charge-sheet filed under Section 173(2) CrPC / Section 193(2) BNSS and the supplementary charge-sheet filed pursuant to further investigation under Section 173(8) CrPC / Section 193(9) BNSS. These reports are to be read conjointly and cumulatively to determine if a prima facie case exists.
This principle ensures investigative continuity and prevents fragmented appreciation of evidence, thereby upholding the fairness of the judicial process.
7. Further Investigation Is Additional, More, or Supplemental
Further investigation within the meaning of provision of Section 173(8) CrPC/Section 193(9) BNSS is additional; more; or supplemental not fresh investigation.
In the case of Rama Chaudhary v. State of Bihar, (2009) 6 SCC 346, it was held by the Supreme Court that ‘further investigation within the meaning of provision of Section 173 (8) CrPC/ Section 193 (9) BNSS is additional; more; or supplemental.’ Hence, it is the continuation of the earlier investigation and not a fresh investigation or reinvestigation to be started from the beginning, superseding the earlier investigation altogether.
8. Seeking Permission From the Court Is Desirable but Not Mandatory
Seeking permission from the Court to conduct further investigation under Section 173(8) CrPC / Section 193(9) BNSS is desirable but not mandatory. In Babujan @ Sk. Sabjan v. State of Orissa (CRLMC No. 1693 of 2021, decided on 23 August 2023), the Orissa High Court held that cognizance cannot be quashed merely because the police carried out further investigation without prior permission from the Court.
The Court clarified that while it is preferable for the police to inform the Court and seek permission, non-compliance does not vitiate the further investigation or the cognizance order. This interpretation is consistent with the statutory scheme under Section 173(8) CrPC and Supreme Court precedents such as Vinubhai Haribhai Malaviya v. State of Gujarat (2019) 17 SCC 1, which affirm the continuing authority of investigating agencies to pursue further investigation.
9. Further Investigation and Delay in Trial
The Supreme Court has consistently held that mere delay in approaching a court is not, by itself, a ground to dismiss a case, though it may be considered when reaching a final verdict. In a ruling by Justices Surya Kant and J.B. Pardiwala, the Court clarified that under Section 173(8) CrPC and Section 193(9) BNSS, investigating agencies retain the right to conduct further investigation even after a final report under Section 173(2) CrPC / Section 193(3) BNSS has been accepted.
In State of Rajasthan v. Aruna Devi, the Supreme Court affirmed that a Magistrate may order further investigation even after acceptance of a final report, and that the accused need not be heard at that stage. Similarly, in Vinay Tyagi v. Irshad Ali (2013), the Court emphasized that further investigation is a continuation of the original process and does not amount to double jeopardy under Article 20(2) of the Constitution.
These rulings establish that concerns about delay in trial, while relevant, cannot alone justify dismissal of proceedings. The principle of investigative continuity ensures that new evidence or leads can be pursued without procedural barriers, thereby safeguarding the integrity of justice.
10. Unfettered Right of Further Investigation
Section 193(9) of the Bharatiya Nagarik Suraksha Sanhita (BNSS), 2023, grants the investigating agency an unfettered right to conduct further investigation, a power not restricted to the pre-trial stage. The Delhi High Court has affirmed that this provision, like Section 173(8) of the CrPC, imposes “no conditions” and cannot be curtailed since the statute itself contains no such limitation.
Justice Yogesh Khanna emphasized that the right to investigate under these provisions is not confined to the period before trial begins. In State of Rajasthan v. Aruna Devi, the Supreme Court further clarified that a Magistrate may direct the CBI to undertake further investigation even after a final report has been accepted, and that the accused are not entitled to a hearing when such requests are considered.
Together, these rulings underscore the broad and continuing authority of investigating agencies to pursue further investigation whenever necessary, ensuring that justice is not compromised by procedural rigidity.
Conclusion
Police officers typically file a supplementary charge sheet upon receipt of Forensic Science Laboratory (FSL) reports, expert opinions, or new evidence. Often, the initial charge sheet is filed prematurely due to delays in receiving these reports or pressure to dispose of cases. Supplementary charge sheets are also filed pursuant to further investigation ordered by superior officers or courts, or when fresh evidence/witnesses emerge.
However, delays in FSL reports, frequent transfers of investigating officers, and poor record-keeping frequently result in reports reaching the police station late or getting misplaced, hindering timely filing of supplementary charge-sheets and causing complications during trial.

