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Preventive detention in Spain's Constitutional Court: guarantees and recent case law

Preventive detention in Spain's Constitutional Court: guarantees and recent case law

Case Law9 min read

Constitutional Court case law on preventive detention: proportionality principle, legitimate purposes, enhanced reasoning requirement and máximum duration doctrine.

by Equipo Lexiel

Table of contents
  1. Constitutional Basis
  2. Enhanced Reasoning Requirement
  3. Time Limits and Extensions

Preventive Detention in Spain's Constitutional Court

Constitutional Basis

Preventive detention affects the fundamental right to personal liberty (Art. 17 CE). The TC's consolidated doctrine (since STC 128/1995) requires four cumulative elements: rational indications of criminal activity, a constitutionally legitimate purpose, strict proportionality, and enhanced judicial reasoning.

Enhanced Reasoning Requirement

The TC has been especially demanding about the reasoning requirement. STC 47/2000 established that detention orders must be self-sufficient, generic references to prosecutor submissions or prior criminal record without concrete analysis of flight risk or recidivism are insufficient.

STC 15/2024: Granted amparo for a detention order invoking "social alarm" without proving the offense fell within Art. 503.1.3ª LECrim. Media impact alone is insufficient.

STC 83/2024: Reaffirms that sentence severity alone is not sufficient when the accused has demonstrated family and employment ties.

Time Limits and Extensions

LECrim establishes máximum periods (1, 2, and 4 years by offense gravity). Each extension must be justified with new elements: reproducing the original reasoning is insufficient (STC 98/1998).

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