The investigation should concern one of the following criminal offences (Art. 588 ter a in relationship with art.579.1 Criminal Procedural Code): a) Intentional crimes punished with a maximum of, at least, three years’ imprisonment sentence. b) Offences committed within a criminal group or organisation. c) Terrorist offences
General requirements:
1. principles of speciality (a measure is related to the investigation of a specific crime),
2. adequacy (the objective and subjective scope and the duration of the measure depending on its usefulness),
3. exceptional nature and necessity (where the investigation, given its nature, does not have other measures available which are less onerous to the fundamental rights of the accused, and when discovering of the facts is seriously hampered without recourse to this measure)
4. proportionality of the measure (when the detriment of the rights and interests at stake is not greater than the benefit that their adoption provides for public interest and third parties).
5. judicial authorization, specifying the technical means to be used.
6. Obligation of providers, agents and persons to provide the assistance and cooperation needed to the judge, the Public Prosecution Service, or members of the Judiciary Police appointed.
Article 221. Execution of a European Investigation Order for interception of telecommunications.
When the competent Spanish judicial authority receives a European Investigation Order for interception of telecommunications, it may execute it in one of the following ways:
(a) the immediate transmission of telecommunications to the issuing authority.
(b) interception, recording and subsequent transmission of the result of the interception of telecommunications to the issuing authority.
The choice of the manner in which the European Investigation Order is to be executed shall be agreed with the issuing authority.
Article 588 bis a. Guiding principles for gathering judicial authoritation regarding these measures. During the pre-trial investigation, some of the inquiry measures can be applied as long as it is through a judicial authorization fully abiding with the principles of speciality, suitability, exceptionality, necessity and proportionality of the measure. -The principle of speciality requires that a measure should be related to the investigation of a specific crime. Measures of technological investigation aiming at preventing or discovering offences or clearing up suspicions without an objective basis shall not be authorized. -The principle of suitability will define the objective and subjective scope and the duration of the measure according to its utility. -According to the principles of exceptionality and necessity, the measure can only be applied: a) when other measures less harmful for the human rights of the investigated or accused person but equally useful for the clarification of the fact are not available, or b) when the discovery or the verification of the investigated fact, the identification of its perpetrator or perpetrators and their whereabouts, or the location of the effects of crime could be seriously hampered without resorting to this measure. -The investigation measures provided for in this chapter will only be deemed proportional when, having considered all the circumstances of the case, the sacrifice of the involved rights and interests does not exceed the benefit resulting from its adoption to the public and third party interest. In order to balance the conflicting interests, the assessment of the public interest will be based on the seriousness of the fact, its social significance or the technological field of production, the intensity of the existing pieces of circumstantial evidence and the relevance of the results pursued with the restriction of the right.
KEY POINTS: 1) An investigation into a serious offence must exist; 2) There must be serious indications of the crime that justify implementation of the measure; 3) Agreement to the measure must be supported by reasons, taking into consideration the necessity and the scale of the operation; 4) The communications that are going to be subjected to the measure must be specified; 5) The term of the measure must be specified