1For the purposes of detecting serious crimes, a judicial police officer or agent may, with the authorization and under the supervision of the prosecutor, be infiltrated into a criminal group in order to identify the members of the group and collect information necessary for the investigation, concealing his cooperation with the police or his duty as police employee.
2The infiltrated judicial police employee should not provoke a criminal act that would not have been committed without his intervention. When provocation has been proven, the results cannot be used.
3The authorization of the prosecutor must specify the time period of the infiltration, which may be extended by the prosecutor for up to six months and the permitted scope of the infiltrated employee, indicating, as appropriate, the illegal actions that he may commit, without endangering the life of others.
4The infiltrated judicial police employee may be questioned as a witness. If the testimony received from infiltrated persons is essential to resolving the case, the testimony shall be taken by observing the rules on the preservation of anonymity of the informant. When the latter are not summoned as witnesses, information provided by them cannot be used.