Listen, don't interrupt, try to gather as much information as possible and keep the caller talking. Take note of the date, time and telephone number on the display, the length of the call, the exact wording of the threat, characteristics of the caller (language, type of speech, gender, dialect/ accent, estimated age), and background noises.
In addition, ask these questions:
- When will the bomb explode?
- Where is the bomb?
- What does the bomb look like?
- What kind of bomb is it?
- How is the bomb detonated?
- What is your name?
- Where are you calling from?
- Why did you plant the bomb?
In conclusion, explain that you are not in charge.
Important: Notify the police immediately (emergency number 110) and your supervisors about the threat.