The Difference Between a Witness, Suspect, Defendant, and Convict

In the news and in everyday conversation, the terms "witness," "suspect," "defendant," and "convict" are often used interchangeably. In reality, each marks a different stage in the criminal justice process — with different rights and legal consequences.

Witness (Saksi)

A witness (saksi) is a person who can give a statement, for the purposes of investigation, prosecution, and trial, about a criminal case that they have personally heard, seen, or experienced.

A witness is not necessarily involved in the offense. However, a witness's status may evolve into that of a suspect if evidence of involvement emerges. For this reason, a witness too should be careful in giving a statement and is entitled to be accompanied by counsel.

Suspect (Tersangka)

A suspect (tersangka) is a person who, on the basis of preliminary evidence, is reasonably suspected of being the perpetrator of an offense by reason of their conduct or circumstances.

The key phrase is "reasonably suspected" — guilt has not been proven. Naming a person as a suspect must rest on at least two items of valid evidence. At this stage, a person already holds the full rights of a suspect, including the right to legal counsel and the right to file a pretrial motion (praperadilan).

Defendant (Terdakwa)

A defendant (terdakwa) is a suspect whose case has been transferred to the court and who is undergoing trial.

The change in status from suspect to defendant occurs when the public prosecutor transfers the case file to the District Court (Pengadilan Negeri). It is at this stage that the defense at trial becomes decisive — from the objection (eksepsi) and the examination of witnesses to the defense plea (pledoi).

Convict (Terpidana)

A convict (terpidana) is a person on whom a sentence has been imposed by a court judgment that has acquired final and binding legal force (inkracht van gewijsde).

This status arises after all ordinary legal remedies (appeal and cassation) have been exhausted or not used. Even so, a convict still has an extraordinary remedy in the form of a Case Review (Peninjauan Kembali / PK) where new evidence (novum) is discovered.

Summary of the Differences

In sequence, the stages are:

1. Witness — gives a statement, not necessarily involved.
2. Suspect — suspected of being the perpetrator, at the investigation stage.
3. Defendant — whose case is being tried in court.
4. Convict — has been found guilty by a final judgment.

Why These Distinctions Matter

Each status carries different rights and legal strategies. Misunderstanding one's legal position can cause a person to miss a crucial moment — for example, the deadline to file an appeal or a pretrial motion.

Conclusion

Understanding which stage your case is at helps determine the right legal steps. If you are unsure of your own legal status or that of a family member, consult a criminal defense advocate so that a defense strategy can be prepared as early as possible.