1The judicial police, even after a report of a criminal offence, shall continue to perform the functions provided for under Article 30, gathering and recording every element valid for the reconstruction of the fact and for identifying the perpetrator. In particular, it proceeds:
ain searching for and recording items and traces of the criminal offence, as well as in preserving them and the crime scene for as long as this is necessary;
bin searching for and questioning the persons who can indicate the circumstances of the act.
cin performing the actions provided for in the following articles.
2After the prosecutor has intervened, the judicial police shall carry out all actions ordered or delegated specifically by the prosecutor and shall carry out by initiative any other necessary investigative action and obtain new sources of evidence.
3When performing actions which require special technical knowledge, on its own initiative or delegated by the prosecutor, the judicial police may engage experts, who cannot refuse the assigned tasks, without legitimate reasons.