PUZZLE of ACCUMULATION

Accumulation of Evidence in Indonesian Criminal Procedure Law

In the context of Indonesian criminal procedure law, Accumulation refers to the progressive process of collecting and strengthening evidence until it reaches the threshold required by the Indonesian Criminal Procedure Code (KUHAP) to designate a person as a suspect.

The following describes the sequence of evidence accumulation leading to the investigation stage:

1. Inquiry Stage: Accumulation of "Initial Information"

Before a case enters the formal investigation stage, investigators conduct an accumulation of reports/complaints and preliminary statements.

• Focus: Determining whether a criminal event has occurred.
• Accumulation: Investigators gather preliminary indications and clues. At this stage, the information is not yet legally binding and does not constitute formal evidence under Article 184 of KUHAP.
• Outcome: If the accumulated information is considered sufficient to indicate the existence of a criminal offense, a Case Review Meeting (Gelar Perkara) is conducted to determine whether the matter should be upgraded to the investigation stage.

2. Investigation Stage: Accumulation of "Legally Admissible Evidence"

Once a case enters the investigation stage, the accumulation process must satisfy the evidentiary requirements established by Article 184 of KUHAP before a person can be formally designated as a suspect.

Accumulation Component	Role in Determining Suspect Status
Witness Testimony	Accumulation of consistent and mutually corroborating witness statements concerning the alleged criminal event.
Expert Testimony	Accumulation of scientific or professional opinions that provide an objective basis for the case (e.g., forensic, ballistic, or financial analysis).
Documents	Accumulation of official records and documents supporting the suspect's involvement (e.g., transaction records, written orders, contracts).
Indications (Circumstantial Evidence)	Accumulation of correlations among witness testimony, documents, and statements that collectively create a reasonable belief regarding the occurrence of the offense and the identity of the perpetrator.
Suspect's Statement	Accumulation of admissions or explanations provided by the suspect that are independently confirmed by other evidence.

3. The Essence of Accumulation: "Sufficient Preliminary Evidence"

Designating a person as a suspect is not merely a matter of collecting information. It is a process of mutually reinforcing accumulation that creates a legally sufficient evidentiary foundation.

• Two-Evidence Principle: Accumulation is not measured by the quantity of evidence alone. For example, ten witnesses may still constitute only one category of evidence if there is no supporting evidence of a different type. What matters is the quality and diversity of legally recognized evidence.
• Connectivity (Puzzle Model): Accumulation is considered sufficient when individual pieces of information (witness testimony, documents, expert opinions, etc.) fit together to form a coherent and logical picture of who committed the act and how it was carried out.
• Threshold Requirement: Once the accumulated evidence exceeds the threshold of Sufficient Preliminary Evidence—as interpreted by Constitutional Court Decision No. 21/PUU-XII/2014, requiring at least two legally admissible forms of evidence—the investigator is obligated to designate the individual as a suspect through the formal case review process.

4. Risks Associated with Evidence Accumulation

• Invalid Accumulation: If evidence is obtained unlawfully (for example, through torture, coercion, or unauthorized seizure), the resulting accumulation may be deemed legally inadmissible and cannot be relied upon.
• Excessive Accumulation Without Resolution: If extensive evidence has been gathered but no clear link to a perpetrator can be established, investigators may issue an SP3 (Order for Termination of Investigation) on the grounds of insufficient evidence or the absence of a criminal offense.

Summary

Accumulation during the investigation stage is fundamentally a process of selection, verification, and corroboration. The objective is not merely to gather large amounts of information, but to construct a reliable evidentiary framework in which each piece of evidence reinforces the others through cross-confirmation. This process enables investigators to conclude, with a legally sufficient degree of certainty, that the identified suspect is indeed the person responsible for the alleged criminal act.

Key Takeaway:
Effective evidence accumulation is not about quantity; it is about building a coherent and legally admissible structure of proof where each evidentiary element supports and validates the others.

---

The "Puzzle Pattern" and Evidence Connectivity in Criminal Procedure

In criminal procedure, the Puzzle Pattern or Evidence Connectivity refers to a logical method used to determine whether an accumulated collection of evidence can construct a single, coherent, and persuasive reconstruction of an alleged criminal event.

If evidence accumulation represents the collection of individual pieces, connectivity serves as the "locking framework" that transforms those separate pieces into one complete picture. The following sections explain the technical principles behind this approach.

1. The Principle of Convergence (Mutual Reinforcement)

Investigators do not evaluate evidence in isolation. Connectivity operates through a process of convergence, where different categories of evidence independently point toward the same conclusion.

• Example: Witness A states that a suspect was seen at the crime scene. On its own, this statement may not be sufficient. However, if Witness A's testimony is connected with CCTV footage and forensic DNA results that all point to the same person, place, and time, a strong evidentiary connection is formed.
• Analogy: Individual evidence resembles separate straight lines. Connectivity is the process of crossing those lines until they intersect at a precise coordinate, identifying a common factual conclusion.

2. The "Triangulation" Structure

Criminal investigations frequently use a method known as triangulation to reduce bias, error, or false statements.

1. Subjective Evidence: Testimony from witnesses, victims, or involved parties.
2. Objective Evidence: Documents, digital records, physical objects, and other tangible materials.
3. Scientific Evidence: Forensic laboratory findings, autopsy reports, cyber-forensic analysis, DNA testing, and similar technical evidence.

Connectivity Pattern: When all three categories support the same factual narrative, the puzzle is considered securely locked. If one category directly contradicts the others—for example, witness testimony identifies a suspect while forensic evidence excludes that person—the connectivity framework becomes defective and requires further investigation.

3. The Logic of Causality and Chronology

Connectivity also requires a narrative that is logically consistent in terms of both causality and chronology.

• Chronological Connection: Evidence must fit into a timeline free of contradictions. If a suspect claims to be at Location X while GPS or digital records place the individual at Location Y at the same moment, chronological connectivity is broken.
• Behavioral Connection: Evidence should connect Mens Rea (criminal intent) with Actus Reus (criminal conduct), demonstrating both motive and action where required by law.

4. Why the Puzzle Pattern Matters for Suspect Designation

The puzzle pattern often determines whether investigators possess sufficient legal grounds to formally designate an individual as a suspect.

Puzzle Condition	Legal Implication
Fragmented	Multiple pieces of evidence exist, but they do not meaningfully connect to one another. Further inquiry is required before suspect designation.
Contradictory	Evidence conflicts with other evidence, creating reasonable doubt. The presumption of innocence remains paramount.
Interconnected	Evidence forms a coherent and logical sequence of events, supporting the legal threshold of sufficient preliminary evidence.

5. The Risk of "Gaps" in the Puzzle

Competent investigators actively search for potential gaps within the connectivity structure.

• A gap exists whenever a plausible alternative explanation, contradiction, or credible alibi can fit within the evidentiary framework.
• If an alibi successfully occupies a gap in the puzzle, the legal construction becomes vulnerable and may fail under judicial scrutiny.
• The investigator's objective is therefore to close these gaps through the collection of additional evidence until the factual reconstruction becomes comprehensive and internally consistent.

Evidence Matrix: A Technical Representation

In professional case management and legal documentation, the puzzle pattern can be represented through an Evidence Matrix. In this model:

• Columns contain the available categories of evidence (witness testimony, documents, forensic reports, digital records, etc.).
• Rows contain the legal elements of the alleged offense that must be proven.
• Each completed cell represents a connection between a specific piece of evidence and a required legal element.

The greater the number of verified connections within the matrix, the stronger the overall evidentiary structure becomes.

Key Takeaway:
Evidence alone does not establish a case. The decisive factor is connectivity— the ability of independent pieces of evidence to converge, reinforce one another, and form a complete, logical, and internally consistent reconstruction of events. A criminal case becomes stronger as the puzzle contains fewer gaps and more interconnected points of verification.