
Article restored from the June 2023 archive - to be updated in light of subsequent rulings.
Once they have received authorisation from the magistrate in charge of the investigation, judicial police officers and agents do not need any special clearance or individual designation by their hierarchical superior to access the National Platform for Judicial Interceptions (PNIJ).
What is the PNIJ?
The National Platform for Judicial Interceptions is the centralised tool used by investigation services to carry out interceptions of electronic communications ordered as part of a preliminary investigation, a flagrancy investigation or a judicial investigation. It allows, in particular, the wiretapping of telephone conversations, the retrieval of connection data and the geolocation of devices.
The argument raised by the defence
Several grounds of nullity were drawn from the absence of individual clearance for investigators accessing the PNIJ. The defence argued that, beyond the magistrate's authorisation, each judicial police officer or agent had to be individually designated by their superior to access the platform, on pain of nullity of the resulting acts.
The position of the Court of Cassation
The Criminal Chamber ruled: the authorisation given by the competent magistrate (public prosecutor or investigating judge) is sufficient to ground access by investigators to the PNIJ. No legal provision requires any additional special clearance or individual designation by the hierarchy. The regularity of the interceptions cannot therefore be challenged on this basis alone.
What avenues of challenge remain?
While the absence of individual designation is not in itself a ground for nullity, the defence may still challenge:
- the regularity of the initial authorisation by the magistrate (reasoning, proportionality, duration);
- compliance with the legal conditions of the interception (offence targeted, sentence incurred);
- the traceability of access and the integrity of the data collected;
- the use of intercepts beyond the authorised perimeter.
The role of the criminal defence lawyer
Monitoring the regularity of interceptions is one of the classic lines of defence in organised crime and complex judicial investigation matters. Charles Bruguière, Esq., analyses the authorisation orders, execution reports and the entire chain of access to the PNIJ to identify useful nullities.
Source
Brief published on Dalloz Actualité (June 2023).
About the author

Maître Charles Bruguière
Criminal defense lawyer at the Paris Bar
A member of the Paris Bar, Maître Charles Bruguière practises criminal law exclusively. He takes urgent cases 24/7 in Paris and anywhere in France, defending people under investigation or prosecution.
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