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Articles 458 to 467 CP · Spain

False testimony and obstruction of justice: witnesses, experts and pressures on the process

Defence for accused witnesses and experts, protection for ours · Author: Francisco Javier Martín Porras, criminal lawyer and court expert · SCJE team

The judicial process protects itself: lying as a witness, reporting falsely as an expert, pressuring someone who is going to testify or revealing the secrecy of the proceedings are offences against the Administration of Justice. We defend witnesses and experts accused of false testimony, and we also act when the other side fabricates testimony or pressures ours.

In brief. In brief. False testimony against the accused in a criminal case: prison of 1 to 3 years (art. 458.2). Experts and interpreters: the same penalties plus disqualification of 6 to 12 years. Obstruction: pressures on witnesses with prison and a fine (art. 464). Non-appearances that suspend trials with a remand prisoner are also criminal.

What is at stake

1-3
years for false testimony against the accused in a criminal case (art. 458.2)
6-12
years of disqualification for mendacious experts and interpreters (art. 459)
1-4
years for influencing witnesses with violence or intimidation (art. 464)

Lies are measured on facts: error, memory and opinion are not offences

Article 458 punishes the witness who departs from the truth in judicial proceedings with prison of 6 months to 2 years and a fine; if the testimony is against the accused in a criminal case, 1 to 3 years, and if a conviction followed, higher penalties. The offence requires lying about relevant facts: peripheral inaccuracy or forgetting do not integrate it. Experts and interpreters who maliciously depart from the truth receive the penalties in their upper half plus special disqualification of 6 to 12 years (art. 459), and the lesser step of art. 460 covers half-truths and relevant silences. The system closes with the presentation of false witnesses (art. 461), suspensive non-appearance (art. 463), obstruction through violence or intimidation (art. 464), destruction of proceedings, revelation of secret proceedings and professional disloyalty (arts. 465 to 467).

Our practice: defending accused witnesses and experts, because falsehood is measured on facts, not on assessments or opinions, and error or bad memory exclude intent; timely retraction before judgment with mitigating effects; and the procedural counter-attack when testimony is fabricated against our client or our witnesses receive pressures, converting the pressure into evidence against whoever exerts it.

Provision by provision

The offences, article by article

Art. 458 CP

False testimony

The witness who departs from the truth in judicial proceedings answers with prison of 6 months to 2 years and a fine; if the testimony is against the accused in a criminal case, 1 to 3 years, and if a conviction also followed, penalties one degree higher. The offence requires a lie about relevant facts: peripheral inaccuracy or forgetting do not integrate it. The review of the complete examination (not loose phrases) dismantles most querellas; as prosecution, we choose the moment, because the querella after a final judgment declaring the mendacity proved multiplies viability.
Art. 459 CP

Experts and interpreters

Experts or interpreters who maliciously depart from the truth receive the penalties of art. 458 in their upper half and special disqualification of 6 to 12 years. Good-faith technical discrepancy is not an offence: without intent to falsify, the mistaken report is fought with counter-expertise, not with a querella.
In practice

Against experts, the real route is the counter-expertise

Art. 459 requires malicious mendacity, not discrepancy: we reserve the criminal action for demonstrable falsehoods (invented data, impossible measurements), where the 6-to-12-year disqualification makes the process existential for the expert.
Art. 460 CP

Alterations without substantially departing from the truth

Silencing facts or altering testimony with reticence or inaccuracies without substantially departing from the truth: a fine and disqualification where applicable. The lesser step, designed for half-truths, useful when the witness selectively “does not remember” what would incriminate them to remember. It is proved by documentary contrast: what they said before, what is on record, what they omitted.
Art. 461 CP

Presenting false witnesses or experts

Whoever knowingly presents false witnesses or mendacious experts answers with the same penalties as them. It reaches the litigant and, with aggravated disqualification, the lawyer or court agent who does so in professional practice. The imputation of the lawyer requires proven knowledge of the mendacity, not the mere defeat of the witness; as prosecution we invoke it when the scheme of prepared witnesses is patent (cloned contradictions, recorded rehearsals).
Art. 463 CP

Non-appearance that suspends the trial

Unjustified non-appearance, after summons in legal form, at a trial with the accused in pre-trial detention causing its suspension: prison of 3 to 6 months or a fine; with specific penalties for lawyers, court agents and officials. The diary does not exempt: we protect ourselves with documented prior communications of impossibility, because art. 463 punishes the lack of justification, not a real scheduling conflict communicated in time.
Art. 464 CP

Obstruction through violence or intimidation

Influencing directly or indirectly, with violence or intimidation, complainants, witnesses, experts, parties or their relatives so that they modify their procedural conduct: prison of 1 to 4 years and a fine; and later reprisals, autonomous punishment. It is the offence that protects our witnesses from pressures. Pressures are proved with immediacy: preserved messages, same-day reports, protection requested. As defence, we distinguish punishable pressure from lawful contact between co-accused or relatives: not every approach is obstruction.
Arts. 465 and 466 CP

Destruction of proceedings and revelation of secrets

Destroying or hiding documents or proceedings, and revealing proceedings declared secret (art. 466, with specific penalties for lawyers and court agents), close the system with fines, prison and disqualifications. The case file leaked to the press has an author, and art. 466 awaits them.
Art. 467 CP

Professional disloyalty

The disloyalty of the lawyer who deliberately harms their client or advises both parties requires harm and intent: changes of firm and supervening conflicts are resolved with documented abstention, not with querellas.
Penalties at a glance

Summary table: conduct, article and penalty

ConductArticleContentPenalty
False testimonyArt. 458.1 CPDeparting from the truth on relevant facts6 months to 2 years and fine
Against the accusedArt. 458.2 CPFalse testimony in a criminal case against the accused1 to 3 years; higher if conviction followed
Mendacious expertsArt. 459 CPMalicious falsehood by experts or interpretersUpper half plus 6 to 12 years disqualification
Half-truthsArt. 460 CPReticence or inaccuracies without substantial falsehoodFine and disqualification where applicable
Presenting false witnessesArt. 461 CPKnowing presentation of false witnesses or expertsSame penalties; aggravated for professionals
Suspensive non-appearanceArt. 463 CPUnjustified absence suspending trial with remand prisoner3 to 6 months or fine; specific for lawyers
ObstructionArt. 464 CPViolence or intimidation on witnesses and parties1 to 4 years and fine; reprisals autonomous
Destruction and disloyaltyArts. 465-467 CPDestroying proceedings, revealing secrets, disloyaltyFines, prison and disqualifications

Summary drawn from the Spanish source page for orientation purposes. The applicable provisions are those of the Criminal Code in force at the relevant time; each case requires individual analysis by a criminal lawyer.

How we defend these cases

The process protects itself, and so do we

Original commentary by the firm on articles 458 to 467 CP. Falsehood is measured on nuclear facts and conscious lies: the complete examination, the documentary contrast and the reconstruction of what the witness really knew decide these cases on both sides of the courtroom.

01

Falsehood is measured on facts, not on assessments or opinions

02

Proof of error or bad memory against the intent to lie

03

Timely retraction before judgment: mitigating effects

04

Procedural counter-attack when witnesses are fabricated or pressured

Timeline

These cases, step by step

Phase 01

Detection: the false testimony or the pressure is documented immediately (complete recordings, messages, same-day reports)

Phase 02

Strategy: against experts, counter-expertise and discrediting before querella; against witnesses, the querella after the judgment that declares the mendacity proved

Phase 03

Protection: for pressured witnesses, immediate reporting and protection measures; the pressure becomes evidence against whoever exerts it

Phase 04

Outcome: the conviction of the false witness opens the review of the conviction it caused; retraction before judgment mitigates

Who we assist

Situations where this defence is decisive

🗣

Witnesses accused of false testimony

The offence requires knowingly departing from the truth: error, bad memory or defective perception are not criminal. Early rectification before the court deactivates intent.

🔬

Experts accused over their reports

Good-faith technical discrepancy is not an offence: art. 459 requires malicious mendacity. The mistaken report is fought with counter-expertise, not with a querella.

Persons convicted on false testimony

The querella under art. 458.2 runs in parallel to the appeal: the conviction of the witness opens the review of yours. Falsehood on nuclear facts is proved with documents and objective impossibilities.

🛡

Witnesses under pressure

Art. 464 punishes influence through violence or intimidation with 1 to 4 years: document the pressures immediately; we request protection and convert the pressure into evidence.

FAQ

Frequently asked questions on false testimony and obstruction

A witness lied at my trial. What can I do?
Bring the accusation for false testimony: if they testified against you in a criminal case, the aggravated offence of art. 458.2 reaches 3 years. You will need to prove the falsehood on nuclear facts (documents, other witnesses, objective impossibilities). We process it in parallel to the appeal, because the witness’s conviction opens the review of yours.
I made a mistake when testifying. Can I be accused of false testimony?
The offence requires knowingly departing from the truth: error, bad memory or defective perception are not criminal. If you noticed the mistake, early rectification before the court itself deactivates the intent. We defend these accusations by reconstructing what the witness really knew when testifying.
What is the penalty for threatening a witness so they do not testify?
Prison of 1 to 4 years and a fine (art. 464), besides the offence of threats if there is one, and aggravation if the objective is achieved. If your witness is receiving pressures, document them immediately: we request protection and turn the pressure into evidence against whoever exerts it.

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