The Madlanga Commission

Evidence chain of custody: a guide for South Africa

Understand the evidence chain of custody in South Africa. Learn how to securely handle and document evidence for court admissibility.

Published 2026-08-10

Evidence chain of custody: a guide for South Africa

Evidence chain of custody: a guide for South Africa

Hands sealing evidence bag in forensic lab

The evidence chain of custody is the documented, unbroken record of who collected, handled, transferred, and stored a piece of evidence from the moment it was seized until it is presented in court. If you have or encounter evidence right now, do three things immediately:

South African admissibility and probative weight are governed by the Criminal Procedure Act, the Criminal Law (Forensic Procedures) Amendment Act (which establishes the National Forensic DNA Database), and SAPS/FSL Standard Operating Procedures. The sections below unpack each layer in detail.

Key takeaways

A complete, signed chain-of-custody record from scene to court is the single most reliable protection against evidence being excluded or its probative value reduced in South African proceedings.

Point Details
Document every link Record handler name, role, date/time, condition, and seal number at every handover without exception.
Use approved kits and seals SAPS-approved evidence sealing bags and collection kits are required for biological samples under the 2020 regulations.
Submit to FSL promptly The NFDD loading target under the Criminal Law (Forensic Procedures) Amendment Act 37 of 2013 sets the administrative standard for DNA samples.
A broken chain reduces weight, not always admissibility Courts weigh corroborating metadata and witness credibility; remediate gaps with affidavits and secondary evidence.
Label the item, not just the lid SANAS TG 01-03 warns that labelling lids alone is insufficient; label the container or item itself and seal for long-term storage.

Table of Contents

What does the evidence chain of custody actually mean?

The chain of custody is a continuous, verifiable sequence of possession. Every person who touches, moves, or examines an exhibit is a custodian, and every handover from one custodian to the next is a link in the chain. A single undocumented link can become the crack through which a defence attorney drives at trial.

The core components of any chain-of-custody record are:

Without all of these, the record is incomplete. An incomplete record is not automatically fatal to a case, but it hands the defence a legitimate argument about integrity.

Why chain of custody matters in South African courts

South African courts do not apply a rigid automatic-exclusion rule when custody is imperfect. Academic analysis confirms that a broken chain typically reduces the probative value of evidence rather than triggering outright exclusion. Judges weigh the totality of circumstances: corroborating metadata, witness credibility, and whether the discrepancy is explained or inexplicable.

That said, the State carries the burden of proving a continuous chain when the defence contests it. The Civil Proceedings Evidence Act 25 of 1965 provides that when custody is undisputed, documentary or certificate evidence may be admitted without calling every handler as a witness. When it is disputed, the State must account for each link clearly.

Section 212 of the Criminal Procedure Act offers a practical shortcut: affidavit evidence can prove chain content in many circumstances, reducing the need for viva voce testimony from every officer who touched the exhibit. Legal commentary in De Rebus explains how s212(4) specifically allows proof of a document’s content by affidavit, which can significantly shorten trial proceedings when the chain itself is not genuinely in dispute.

The practical consequence: a prosecutor who can produce a complete, signed chain-of-custody form for every exhibit walks into court with far less exposure than one who cannot explain a three-day gap between seizure and FSL submission.

How does the custody process work from scene to court?

Follow this sequence. Each step lists the minimum fields to log at that point.

  1. Scene seizure. Photograph the item in situ before touching it. Record: handler name and rank, date/time, GPS location or address, item description, visible condition, case number. Assign a unique evidence ID on the spot.

  2. Packaging at the scene. Place the item in an approved SAPS evidence sealing bag. Write the unique ID, case number, date/time, and your signature on the bag’s label. Note the seal or barcode number on your custody form.

  3. Transport to the exhibit room. Record: transporting officer’s name, vehicle registration, departure and arrival times, seal integrity on arrival. A second officer should verify the seal is unbroken on receipt.

  4. Station exhibit room receipt. The exhibit officer logs the item into the station register: unique ID, case number, description, condition, storage location (shelf/locker reference), date/time received, and their signature.

  5. Submission to the FSL. Complete the FSL submission form and a covering letter. Log: submitting officer, courier or transport method, date dispatched, FSL receipt date and reference number. Regulations require approved evidence collection kits and sealing bags for biological samples, with separate packaging for buccal samples.

  6. FSL analysis. The laboratory logs receipt, assigns an internal reference, records the analyst’s name and the analysis date. Any sub-sampling or repackaging must be documented on the custody record.

  7. Return or court submission. When the item is returned to the exhibit room or sent directly to court, log: date/time, recipient’s name, condition on return, seal status, and the court case reference.

Pro Tip: Minimise the number of people who handle an exhibit. Single-flow handovers, where one officer takes the item from scene to exhibit room without intermediate stops, reduce the number of links that can be challenged. When double-bagging is needed (wet or fragile items), note both bag numbers on the form.

What should a chain-of-custody form record?

A well-designed form is your primary defence against a custody challenge. Every field below has a specific legal or forensic purpose.

Field Why it matters
Unique evidence ID / barcode Links the physical item to every document in the case file
Case number Ties the exhibit to the docket and prevents cross-contamination between cases
Item description Establishes what was seized; discrepancies between this and later descriptions raise integrity questions
Collector name, rank, unit Identifies the first custodian; required for s212 affidavit or viva voce testimony
Date and time of collection Establishes the custody timeline; gaps must be explained
Location found Corroborates scene photographs and witness statements
Condition at collection Baseline for any later damage or contamination claims
Packaging type and seal/barcode numbers Confirms tamper-evident packaging was used and which specific seal was applied
Subsequent handler entries (name, date/time, reason) Documents every link; each entry should carry a signature
Transfer method Courier, SAPS vehicle, hand-delivery — each carries different verification requirements
Destination (exhibit room, FSL, court) Confirms the item went where the record says it went
Storage location reference Allows physical verification at any point
Signature of releasing and receiving officer Dual-signature at each handover is the single strongest integrity control

SANAS technical guidance TG 01-03 flags that labelling lids alone is poor practice because lids can be swapped. Label the item itself or its proximal container, and seal containers for long-term storage. This applies equally to exhibit bags at the station level.

Where the chain is uncontested, s212 affidavits can substitute for calling every handler. Where it is contested, each signed entry on this form becomes a witness who can be called to verify their own signature.

Special handling rules for different types of evidence

Not all evidence is handled the same way. The type of exhibit determines packaging, storage conditions, and what the custody log must capture.

DNA and biological samples

Use only SAPS-approved evidence collection kits and evidence sealing bags. Buccal samples require separate packaging from crime-scene biological material to prevent cross-contamination. Keep samples dry: moisture degrades DNA rapidly and can make a sample unanalysable. Log the kit batch number on the custody form. The regulations set station-level storage limits and require prompt submission to the FSL, with a covering letter identifying the submitting officer and the case reference.

Gloved hands packaging DNA evidence kit

Digital and electronic evidence

SAPS SOPs for the Cybercrimes Act require limiting interaction with cyber articles to the absolute minimum. Record the device’s power state (on/off/sleep) at the moment of seizure. Use write-blockers when creating forensic images, and generate cryptographic hash values (SHA-256 or MD5) at acquisition. Log those hash values on the custody form. Any change in the device’s condition or custody must be timed, recorded, and, where appropriate, sworn in an affidavit.

Pro Tip: Record the hash value twice: once at acquisition and once when the image is submitted to the analyst. A matching hash is the digital equivalent of an unbroken seal.

Firearms

Photograph the firearm in situ before handling. Render it safe following SAPS firearms protocols, then tag it with a unique evidence label attached to the trigger guard. Do not place it in a bag that obscures the serial number. Log the serial number, make, model, and calibre on the custody form at the point of seizure.

Gloved hands tagging firearm with evidence label

Trace evidence (fibres, glass, soil, paint)

Handle once, minimise. Use paper packaging rather than plastic for dry trace material, since plastic traps moisture and can degrade or contaminate samples. Each trace item should be packaged separately to prevent cross-contamination, and the packaging sequence should be logged.

Storage, transport, and timetable controls in South Africa

Timing is not just administrative. The Criminal Law (Forensic Procedures) Amendment Act 37 of 2013 sets a target of loading DNA samples onto the National Forensic DNA Database (NFDD) within 30 days of analysis where possible. Station-level regulations set storage limits for bodily samples before they must be submitted to the FSL.

For storage condition verification, log the following at each check:

SANAS TG 01-03 draws a practical distinction: for overnight work-in-progress, an examiner need not reseal a container after every interaction, but containers must be sealed and access restricted for long-term storage, with records reflecting that distinction. Forensic labs accredited under SANAS/ISO standards are required to maintain these protocols as a condition of accreditation. A lab’s accreditation status directly affects the credibility of its reports in court.

On transport: use a reliable courier with a documented chain, or a SAPS vehicle with a signed handover at both ends. Never transport exhibits in a personal vehicle without logging the trip and obtaining a receipt at the destination.

Common chain-of-custody failures and how courts respond

Red flags courts scrutinise

The North Gauteng High Court found that mismatched evidence bag serial numbers and contradictory witness descriptions of what was handed in were sufficient to conclude the State had failed to prove a continuous chain of evidence. The conviction did not survive that finding.

How courts weigh discrepancies

Courts do not apply a mechanical exclusion rule. They ask whether the discrepancy is explained, whether corroborating evidence (serial numbers, hash values, photographs) supports the item’s identity, and whether the witnesses who handled it are credible. A single unexplained gap is less damaging than multiple inconsistencies pointing in the same direction.

Remediation when a break is identified

Procedural fairness in investigations more broadly, including documentation and chain-of-custody-like controls in administrative proceedings, follows similar principles: the record must be contemporaneous, complete, and attributable.

Essential South African laws and standards for proving custody

Where s212 affidavits are used to prove chain content, the affidavit must identify the deponent, their role, the item, the dates of custody, and the condition at each relevant point. Section 220 formal admissions can remove the chain entirely from dispute when both parties agree.

Lessons from the Madlanga Commission archive

The Madlanga Commission of Inquiry archive contains case files, witness testimony, and exhibits documenting how evidence was handled, mishandled, and sometimes lost within South Africa’s police and prosecution structures. Two patterns emerge clearly from the public record.

Case type 1: The custody break and its consequences. In the R200 million Durban port cocaine case, evidence disappeared from police custody after seizure. The custody record could not account for the movement of the exhibits between the initial seizure point and the exhibit room. The practical lesson: a gap in the physical custody record, even for a high-value, high-profile seizure, can make prosecution impossible. No chain means no admissible exhibit.

Case type 2: Documentation that preserved probative value. The Aeroton cocaine bust materials in the archive illustrate how contemporaneous documentation, photographs, and signed handover records at each stage preserved the integrity of at least part of the evidence chain, even when other aspects of the investigation were contested. The lesson: partial good practice is not wasted. Courts can and do distinguish between the parts of a chain that are documented and those that are not.

The Commission’s evidence leaders work directly with these materials, and their approach to verifying exhibit provenance reflects the same principles this guide describes. Readers who want to trace how specific exhibits moved through the system can search the full case archive at the link above.

Why custody records are a matter of public trust

The chain of custody is not a bureaucratic formality. Every gap in a custody record is a gap in accountability, and in South Africa’s current environment, where the Madlanga Commission is documenting systemic failures in police, prosecution, and intelligence structures, that gap has consequences far beyond a single trial.

When evidence disappears from a police exhibit room, or when a bag number cannot be matched to a submission form, the damage is not only to the prosecution’s case. It erodes public confidence in the entire justice system. Citizens watching commission hearings, journalists tracking case files, and legal teams reviewing exhibits all depend on the same thing: a record they can trust.

The Commission’s archive exists precisely because that trust has been broken in too many cases. Custody records, properly maintained, are one of the few mechanisms that make accountability possible after the fact. A signed, timestamped, sealed record cannot be argued away. An absent one can.

Sources

Use official government PDFs and SAFLII judgments when citing these sources in affidavits or court papers. Online summaries are useful for orientation; the primary text is what courts and opposing counsel will scrutinise.

This article provides general information about evidence chain-of-custody procedures in South Africa. It is not legal advice. Consult a qualified legal practitioner or the relevant primary sources for guidance specific to your case.

This article is general information, not a substitute for advice from a qualified lawyer. Consult a qualified legal professional about your own circumstances before acting on anything here.

FAQ

What is the evidence chain of custody?

The evidence chain of custody is the documented, unbroken record of every person who collected, handled, transferred, or stored an exhibit from seizure to court. It establishes that the item presented as evidence is the same item that was originally collected.

Does a broken chain of custody make evidence inadmissible in South Africa?

Not automatically. South African courts generally treat a broken chain as reducing the probative weight of evidence rather than triggering automatic exclusion, provided the State can offer some explanation and corroborating context.

Which action best protects the chain of custody at the scene?

Photograph the item in situ, assign a unique evidence ID immediately, place it in a SAPS-approved tamper-evident sealing bag, and record the collector’s name, role, date, time, and the item’s condition before moving it.

What laws govern chain of custody in South Africa?

The Criminal Procedure Act 51 of 1977, the Criminal Law (Forensic Procedures) Amendment Act 37 of 2013, and the 2020 forensic evidence collection regulations are the primary instruments, supported by SAPS/FSL SOPs and SANAS accreditation standards.

How can a custody gap be remediated before trial?

Obtain sworn affidavits from every handler who can account for the gap, gather secondary corroborating evidence such as photographs and access logs, and consider whether s212 of the Criminal Procedure Act allows the gap to be addressed by affidavit rather than live testimony.