Many bombers (or pseudo-bombers) will telephone someone and tell them that a bomb has been placed. A person receiving the call should follow a standard protocol in order to collect as much forensic information as possible.




What kind of bomb is it?


What does it look like?


What will cause it to explode?


What do you want?


When is the bomb going to explode?


Where is the bomb right now?


Where are you calling from?


Who are you?


Who placed the bomb?


Who do you want told?


Why did you place the bomb?


How can we get in touch with you?



(1) exact wording

(2) delivery: well-spoken, incoherent, irrational, cursing

(3) method of delivery: taped, reading a prepared message


Features of the caller's voice:

(1) gender – male or female

(2) age – child, young, middle age, old

(3) accent – If so, what kind?

(4) tone and emotions in voice – calm, angry, excited, slow, rapid, laughter

(5) lisp, stutter or other distinguishing features

(6) familiar features – If so, who does it sound like?

(7) attempts at masking voice


Features of background noises:

(1) traffic or street noises

(2) airplanes

(3) train

(4) trucks

(5) voices

(6) radio or music

(7) loudspeakers

(8) house or office noises

(9) animals

(10) machinery or motors

(11) other


Data about the call:

(1) time and date received

(2) who took the call

(3) extension or phone number called

(4) who was notified and when


Tracking the phone call:

(1) Caller-ID can be useful in finding the phone number of origin, provided the caller has not blocked the ID.

(2) An operator may be able to trace a call, but often the call is over before an operator can even start the trace.



• A cool, calculating bomber can be expected to leave few if any clues.

• It is very easy for the caller to supply misleading information.


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