IPC 143 in the new BNS 2023

If you have been named in an FIR or notice under this section, the section number alone does not decide the outcome — the facts, the evidence and the procedure do. Many cases turn on procedural lapses, bail strategy and the exact ingredients of the offence.

Membership of an unlawful assembly is the foundation of the public-order offences, and it is charged in nearly every case arising from a protest, a crowd confrontation or a group clash. Under the BNS the definition sits at Section 189(1) and the punishment for being a member at Section 189(2). The threshold that matters most is numerical: fewer than five people cannot form an unlawful assembly.

What the section requires

For the offence to be made out, these ingredients have to be established:

• an assembly of five or more persons existed
• the assembly had a common object falling within the section — to overawe by criminal force the Government or a public servant, to resist the execution of law or legal process, to commit mischief, criminal trespass or another offence, to take property or deprive a person of a right by criminal force, or to compel a person by criminal force to do what they are not legally bound to do
• the accused was a member of that assembly knowing the facts that made it unlawful

What changed from the IPC

The provision is carried over without substantive change and the punishment remains six months, or a fine, or both. The structural change is consolidation. The IPC dealt with this across two sections — 141 defined an unlawful assembly and 143 punished membership — and the BNS merges them into Section 189, with the definition at 189(1) and the punishment at 189(2). The related provisions on joining or continuing in an assembly after a command to disperse, and on being armed with a deadly weapon, are carried into the later sub-sections of the same section.

How this section is distinguished from related offences

This section punishes membership alone; it does not require that anything was done. Where a member of the assembly used force or violence in furtherance of the common object, the offence becomes rioting under BNS 191. Where an offence was actually committed in prosecution of the common object, BNS 190 makes every member of the assembly guilty of that offence, which is where the real exposure lies. An affray under BNS 194 is different: it requires two or more persons fighting in a public place and disturbing the public peace, and it has no numerical threshold of five and no requirement of a common object. Common intention under BNS 3(5) requires a shared plan and participation, whereas common object requires neither.

How the case proceeds

The offence is cognizable and bailable and is tried by a magistrate. In practice it is almost never charged alone; it appears alongside rioting, the common object provision, and whatever substantive offences are alleged to have been committed. Because these cases arise from crowd situations, the identification of individual accused is the recurring difficulty, and the number of persons said to have formed the assembly is a contested fact rather than a formality.

Evidence that usually decides these cases

Crowd cases are decided on identification, and identification in a crowd is inherently unreliable, which is why these prosecutions frequently fail. The evidence usually consists of police witnesses identifying individuals, and courts examine closely whether the witness had a genuine opportunity to observe and note the accused, whether the names appear in the earliest documents or were added later, and whether the description given matches. Video and photographic material from the scene, whether official or from bystanders and news coverage, is the most objective evidence available and frequently decides individual cases. The number said to constitute the assembly, and the evidence supporting that number, is a separate matter requiring proof.

How courts approach sentencing

Imprisonment which may extend to six months, or a fine, or both. Where this section stands alone the outcome is usually a fine, and its practical significance lies in the more serious charges built upon it rather than in its own punishment.

Defences that commonly apply

The most effective defences are on numbers and membership. Establishing that fewer than five persons formed the assembly defeats the charge and everything built on it. Establishing that you were present without knowledge of the facts making the assembly unlawful, or were not part of it at all, is the other principal route, and it is supported by objective material fixing your reason for being there. Where names were not recorded in the earliest documents but appear later, that omission is significant. Video material showing the accused not participating, or leaving, is the strongest evidence available.

How a case under this section typically progresses

These matters typically follow a single incident that generates one FIR naming many accused, and the case proceeds against all of them together, which makes it slow. Trial is before a magistrate. Applications for discharge at the framing of charges, on the ground that no specific role or reliable identification is attributed to a particular accused, are common and are the most consequential stage for individuals swept up in a crowd case.

Documents worth gathering early

Assemble everything that objectively fixes your movements and your reason for being at the location: call detail records and tower data, travel or transport records, workplace or academic attendance, and any appointment or purchase made nearby. Obtain the FIR as originally recorded and check whether your name appears in it or was added later, since that sequence is frequently decisive. Collect video and photographic material from the scene, including news coverage and bystander footage, and request CCTV in writing immediately. Where you left before the incident developed, anything fixing the time of departure is directly to the point.

Note on bail and cognizability. Whether an offence is cognizable, and whether it is bailable, is set by the First Schedule to the Bharatiya Nagarik Suraksha Sanhita (BNSS) 2023, not by the BNS section itself. Because that classification decides whether police can arrest without a warrant and how bail is approached, check it for your specific section with an advocate rather than relying on a general summary.

If you have been named under this section

Two questions decide the case. The first is whether the assembly numbered five or more, since below that threshold no unlawful assembly exists and the entire structure of charges built on it collapses. The second is whether you were a member of it knowing the facts that made it unlawful — presence in the vicinity of a crowd is not membership, and a person who happened to be at the location, or who was passing through, is not a member merely because they were seen there. Establishing your reason for being present, with objective support, is the most productive line of work.

Common misunderstandings

"Any group can be an unlawful assembly."
Five or more persons are required. Below that number there is no unlawful assembly, and the charges built on it fail.

"Being present in a crowd makes you a member."
It does not. Membership requires knowledge of the facts that made the assembly unlawful. A bystander or passer-by is not a member.

"Something must have been done."
Not for this offence. Membership alone is punishable. Where force is used the offence becomes rioting, and where an offence is committed the common object provision applies.

"The punishment increased under the BNS."
It did not. The maximum remains six months, or a fine, or both, as under IPC 143.

Related BNS sections

• BNS 189 — Unlawful assembly
• BNS 190 — Common object (IPC 149)
• BNS 191 — Rioting (IPC 147)
• BNS 194 — Affray (IPC 159, 160)

Which code applies to your case

The Bharatiya Nyaya Sanhita 2023 replaced the Indian Penal Code 1860 with effect from 1 July 2024, and the change is not retrospective. The date the offence is alleged to have been committed decides which code governs it. An offence alleged to have occurred on or after 1 July 2024 proceeds under the BNS. An offence alleged to have occurred before that date continues to be investigated, tried, appealed and punished under the IPC, even where the FIR was registered later. Cases from the transition period frequently cite both numbering systems, which is why the old section number remains worth knowing.

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General information for understanding the IPC→BNS change, not legal advice. The BNS restructured many offences — confirm the exact section, sub-section and punishment with a licensed advocate.