Before this clustering algorithms have been used for crime analysis. For instance, one site it is revealed that suspect has black hair and from next site/witness it is revealed that suspect
is youth and from third one reveals that the offender has tattoo on his left arm etc. By describing the offender details it gives a complete picture from different crime incidents. Today most of it is manually done with the help of multiple reports that the detectives usually get from the computer data analysts and their own crime logs