Insight

Pre-trial detention: what it is, what requirements it demands and how long it can last

Pre-trial detention: what it is, what requirements it demands and how long it can last

PA

Written by Pardo Geijo Abogados

Published: June 10, 2026

Pre-trial detention: what it is, what requirements it demands and how long it can last

Few situations in criminal proceedings have an impact as immediate and devastating as pre-trial detention. Within a matter of hours, someone who was living in freedom can find themselves behind bars, separated from their family and not knowing how long that situation will last. All of this before being tried and while the presumption of innocence still protects them.

Pre-trial detention is a precautionary measure of a personal nature by which the judge deprives a person under investigation or accused of their liberty during the process, before a judgment is handed down. It is not a penalty: its sole purpose is to guarantee the proper conclusion of the process, not to punish. This distinction is legally essential, even though the person who suffers it experiences it in a way indistinguishable from a conviction. Precisely because it affects the liberty of someone not convicted, it is subject to a principle of exceptionality: it must be the last resort, when no less restrictive measure is sufficient, and the judge must always justify it.

The Criminal Procedure Act requires that several requirements concur simultaneously, and the order must give reasons for each one. The first is that there be rational indications of criminality: not a certainty, but something more than a suspicion, with objective elements that allow participation to be reasonably attributed. The second is that the offence be punishable with a prison sentence of more than two years, except in cases involving a prior record. The third is that one of the substantive grounds be present: the risk of flight, the risk of concealing or destroying evidence, which only justifies detention during the investigation, the risk of reoffending or the risk that the person under investigation acts against the victim, especially in gender-based violence. The fourth is proportionality: the measure must be proportionate to the seriousness of the offence and the circumstances.

Pre-trial detention cannot be prolonged indefinitely. As a general rule it lasts a maximum of one year when the prescribed penalty does not exceed three years, extendable by up to two more years; when the penalty exceeds three years, it can last up to two years, extendable by another two in cases of special complexity. It can never exceed the prescribed penalty, and the time in pre-trial detention is deducted from the penalty imposed. Once the time limits are exhausted, the person under investigation must be released immediately.

The principle of proportionality requires alternatives that are less restrictive to be assessed: provisional release on bail, the obligation to appear periodically, the withdrawal of the passport and the prohibition on leaving the country, the prohibition on approaching the victim or electronic monitoring. The defence must always propose them.

When the person under investigation is brought before the court, the pre-trial detention hearing is held, one of the most critical moments of the process. The lawyer must argue that the requirements are not met or that the alternatives are sufficient. If the judge orders detention, an appeal lies before the Provincial Court, which must be resolved urgently.

Pre-trial detention is the situation of greatest urgency for a criminal lawyer: there is no room for delay. That is why having the contact details of a trusted criminal lawyer and notifying them immediately after the arrest is one of the most important measures anyone can take.

Trending Articles

What AI Visibility Means for Lawyers


by Josh Rupall and Bryan Driscoll

AI tools increasingly interpret lawyers public information. Clear, consistent and credible sources help ensure they describe legal expertise accurately.

AI dashboard visualizing a lawyer's online profile, reputation, and practice information across mult

The Best Lawyers in Canada 2027: Recognizing the Nation's Top Legal Talent


by Jamilla Tabbara

Honoring established leaders and rising practitioners across Canada's legal profession.

3D model of Canada textured with the Canadian flag.

2027 Best Lawyers Awards: Honoring Excellence in the Legal Profession


by Jamilla Tabbara

Recognizing the outstanding attorneys leading top practice areas nationwide.

United States with American flag representing The Best Lawyers in America 2027 awards

2027 Best Lawyers Awards in Brazil, Mexico, Portugal and Spain


by Jamilla Tabbara

Explore key findings from the awards, including recognition figures and emerging legal talent.

3D country maps of Brazil, Mexico, Portugal and Spain with national flags

Announcing the 2027 Best Lawyers Awards: Austria, Germany and Switzerland


by Jamilla Tabbara

Celebrating the legal professionals throughout Central Europe.

Graphic displaying three-dimensional map cutouts of Austria, Germany and Switzerland.

The Best Lawyers in France 2027: Peer-Reviewed Excellence


by Jamilla Tabbara

Seventeen editions of peer trust, a growing profession and a dynamic legal market.

3D Map of France with National Flag Graphic

Who Can Override a Power of Attorney?


by Bryan Driscoll

A power of attorney carries real legal authority, but it isn't absolute. Here's who can step in to revoke, restrict or set it aside.

Close-up of a power of attorney document, symbolizing legal authority, revocation rights, guardiansh

Inside the 2027 Best Lawyers Awards in Chile, Colombia and Puerto Rico


by Jamilla Tabbara

A closer look at the research process, methodology and key statistics behind the 2027 editions.

3D map cutouts of Chile, Colombia, and Puerto Rico

How to Get an Eviction Off Your Record


by Bryan Driscoll

Whether an eviction can be removed, sealed or corrected depends on your state, your case and where the record appears.

A printed eviction notice attached to a decorative metal security gate, representing housing instabi

How Peer Review Works: Best Lawyers Methodology Explained


by Jamilla Tabbara

Understanding the independent, data-driven framework that defines professional legal standing.

A glowing professional icon surrounded by incoming arrows, symbolizing data collection and feedback.

How to Optimize Your Best Lawyers Profile for AI Search


by Everett Sizemore

Learn how a complete, well-structured Best Lawyers profile can strengthen your visibility and accuracy across AI search platforms.

A laptop screen displaying the Best Lawyers profile dashboard showing customizable sections.

Google Is Losing Major Antitrust Cases. Is This the End of Big Tech’s Winning Streak?


by Justin Smulison

Legal experts say the remedies and appeals, not the liability findings, will determine if Google's losses reshape the tech industry.

Google Antitrust Losses: What They Mean for Big Tech

What Is a Hostile Work Environment?


by Bryan Driscoll

Not every difficult job is a hostile work environment in the eyes of the law. Here's how to tell the difference and what to do next.

Blurred image of a distressed employee in an office, surrounded by motion-blurred coworkers, conveyi

Turn Client Questions Into Content That AI Search Can Find


by Bryan Driscoll and Manny Candal

Client questions are becoming search inputs. Your firm’s content should answer them clearly.

Pile of question marks with a single bright yellow question mark in the center, representing search.

Can You Sue Someone for Emotional Distress?


by Bryan Driscoll

Emotional distress can sometimes support a lawsuit, but whether you have a valid claim depends on the facts, the law and your ability to prove real harm.

Abstract black-and-white face with multiple screaming mouths, representing emotional distress, anxie

GEO for Law Firms: What It Is and How to Optimize for AI Search


by Bryan Driscoll and Everett Sizemore

A seven-step audit for law firms that covers the terms, the pages, the outside profiles and what you can actually measure.

Hands typing on a laptop with glowing GEO and AI search graphics
Tap to expand

Welcome to Smithy AI the Best Lawyers Assistant

I can help you find attorneys, compare firms, explore practice areas, and surface rankings curated from the Best Lawyers methodology.

Not legal advice This assistant provides general information only. For guidance on your specific situation, please consult a licensed attorney.
Learn about Best Lawyers Research Process
Suggested prompts
Chat limit reached
You've reached the message limit for this chat. To keep exploring, browse Best Lawyers directly or come back later to start a fresh conversation.
Browse Best Lawyers