Criminal defense attorneys in Mexico

Criminal law defines which conducts constitute a crime (delito) and what their legal consequences are: prison sentences, fines, reparation of the harm, and security measures. In Mexico, federal-jurisdiction crimes (organized crime, drug-related offenses, serious tax crimes, carrying weapons reserved to the Army) coexist with common-jurisdiction crimes (theft, homicide, bodily injury, fraud, domestic violence), so the field is concurrent between the Federation and the individual states (entidades federativas).

Since the 2008 reform and the entry into force of the adversarial criminal justice system (sistema penal acusatorio), proceedings are oral and take place in public hearings before the Control Judge (Juez de Control) and the Trial Court (Tribunal de Enjuiciamiento). The criminal defense lawyer takes part in every stage: the initial investigation, the detention-review hearing, the formulation of the charge (formulación de imputación), the binding-over to trial (vinculación a proceso), the setting of precautionary measures (including pre-trial detention), the intermediate stage, and the oral trial.

These lawyers act both in defense of the accused and in representation of the victim or aggrieved party through the figure of the legal adviser (asesor jurídico). They negotiate reparation agreements, alternative solutions, prosecutorial-discretion criteria (criterios de oportunidad), and the abbreviated procedure (procedimiento abreviado), which can reduce the sentence in exchange for accepting responsibility.

Key concepts include the presumption of innocence, due process, the theory of the case, the chain of custody of evidence, and the items of proof (datos de prueba). Mishandling the first hours can shape the entire case, which is why acting early is decisive.

When ordinary remedies are exhausted, the amparo (constitutional relief), both direct and indirect, is the avenue for challenging violations of fundamental rights, such as an ill-founded pre-trial detention or an unjust conviction.

Governing laws criminal law

• Constitución Política de los Estados Unidos Mexicanos (artículos 16 a 23)
• Código Nacional de Procedimientos Penales
• Código Penal Federal
• Códigos penales de cada entidad federativa
• Ley Nacional de Ejecución Penal
• Ley Nacional del Sistema Integral de Justicia Penal para Adolescentes
• Ley Nacional de Mecanismos Alternativos de Solución de Controversias en Materia Penal
• Ley de Amparo

Process and timelines

Everything begins with a complaint (denuncia) or private accusation (querella) that opens the investigation file (carpeta de investigación) before the Public Prosecutor (Ministerio Público). If there is a detention, the detention-review hearing must be held within a maximum of 48 hours. It is followed by the formulation of the charge and the initial hearing, where the judge decides on binding-over to trial and precautionary measures. The supplementary investigation may last from two to six months. Next comes the intermediate stage (screening of evidence) and the oral trial before the Trial Court (Tribunal de Enjuiciamiento). A full proceeding usually takes one to three years; abbreviated ones are resolved in weeks.

Documents usually required

• Valid official identification
• Unique case or investigation-file number
• Copy of the complaint or private accusation
• Proof of address
• Available records, expert opinions, or medical reports
• Names of witnesses and items of proof
• Documents evidencing community ties (employment, family, residence) for precautionary measures
• Fee agreement

How much does it cost?

Fees vary according to the seriousness of the crime and the stage. An initial consultation or a detention-review hearing may be charged per event, whereas the full defense of an oral trial is agreed as a retainer (iguala) or a fixed fee that can range from tens to hundreds of thousands of pesos. Free public defense (defensoría pública) is available. Be wary of anyone who charges up front while promising immediate release.

When do you need this lawyer?

You need a criminal lawyer immediately if you are arrested, summoned to give a statement by the Public Prosecutor, or if you learn of an investigation file opened against you. Also if you were the victim of a crime and want to secure reparation of the harm. You do not need one for purely civil or commercial disputes, although these are sometimes disguised as crimes to apply pressure; a good lawyer will tell you when there is no criminal matter.

Red flags when hiring

• Promises release or a guaranteed 'non-exercise of criminal action' in exchange for money
• Claims to have 'contacts' with the judge or the Public Prosecutor
• Does not give you a fee agreement or receipts
• Disappears or fails to attend scheduled hearings