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Migration and Home Affairs

Handbook on warning behaviours

Target Audience
Prison / probationFirst responders or practitionersLaw enforcement officers
key themes association
Formal/informal educationTraining
Peer Reviewed practice


Lithuanian Criminal Police Bureau

The training was implemented by the Lithuanian Criminal Police Bureau with the following partners: the VIP Protection department of the Ministry of the Interior of the Republic of Lithuania, the Estonian Internal Security Service, the Norwegian National Police Directorate, and the European Police Office (Europol).

Type of Organisation: Governmental institution

Project description

The handbook aims to increase awareness of terrorist trends and activities, stressing the growing threat of self-radicalisation. It will support criminal police, intelligence, and law enforcement officers in detecting signs of radicalisation at an early stage, by strengthening their perception and assessment skills.

The handbook provides well-balanced, theoretical and practical knowledge on radicalisation, its preconditions and its background. It also considers what motivates separate individuals. It provides an overview of the path leading individuals to radicalisation, and the reasons behind the process.

The structure has been kept intentionally simple and the contents straightforward. Practical and concrete examples are used to describe cases of attacks organised by separate individuals; they also assist readers in understanding the significance of behaviours that might be seen as warning signs of an individual heading towards radicalisation. Timely identification of radicalisation allows officers to assess the threat posed by separate individuals before too much harm is done.

This manual is intended to be a handy tool that offers guidance for preventive strategy implementation. Its objectives are:

  • to enhance knowledge, awareness and critical thinking on the nature of terrorism, the phenomenon of radicalisation, and the radicalisation process leading to violent extremism;
  • to describe the main types of terrorist groups, including practical cases and examples of good practice — not only across the European Union, but globally;
  • to enhance the capacity of criminal police, intelligence and law enforcement officers to recognise the indicators of radicalisation, supporting them in the intelligence collection needed to prevent the further spread of violent and extreme ideas;
  • to present a valuable set of indicators on self-radicalisation, that will enable criminal police, intelligence and law enforcement officers to detect individuals in the process of self-radicalising, and to evaluate the threat and risk they pose in terms of readiness to carry out terrorist activity. The indicators will also support crime prevention and the maintenance of public order.

The training based on the handbook aims to strengthen capacity and share best practices, and boost criminal police officers’ skills by creating new, modern activity models, thereby stepping up safety and national security.


The 'Handbook on warning behaviours' is designed for official use only, by counter-terrorism officers from the criminal police, law enforcement agencies and intelligence services.

Contact details


Lithuanian Criminal Police Bureau

Contact person: Mrs. EGLE SALCIUTE
Chief investigator of counter terrorism unit
Telephone: (+370) 5219 8671
Email| Website

Read the full practice

Handbook on warning behaviours
(166.16 KB - PDF)