The event took place in a suburb area of the town, not equipped with security cameras. No witness noticed the fact.
How can investigators verify a suspect’s alibi according to the testimony?
Investigators are able to start the analysis of the radio environment activity in order to detect cell sites that literally cover the whole area of interest, with conditions most similar to the day of the crime. According to the survey performed and BTS logs examination, they can specifically focus only on the group of cells with interesting parameters in order to understand suspect’s mobile movements and potential involvement. Asking for the traffic phone records (CDR) of these cells, investigators can search for some valuable junctions in terms of time, location and mobile events which happened under coverage of these cell towers.