Data mining has been as active research area for a last decade. We have shown its usefulness to a variety of tasks including crime control and criminal suppression. It should be pointed out that the result from data mining process is useful knowledge that may be changed over time. In a
conventional system, they started by proposing a design and development processes of information system for catching criminal, so the data mining was just a database system based SQL query command. When we were entered to a terrorism era, the data mining has become to be knowledge discovery for crime pattern understanding. Several data mining techniques have been adopted in order to conquer with terrorist. For example, the mining association rules can be used to create the offender’s profile. The clustering technique composes of two subsequent methods. The first one is the partitioning which is a method to compute a difference of crime career. We can also perceive the trends of crime pattern that changes over year. The second one is data classification in which the data in similar characteristics is classified as the same group. Therefore, it can be used to identify the escape offender. It is very encouraging finding that the crime pattern understanding can be discovered from data analysis. Finally, it is also possible to construct a novel method where the quality of research is conducted from crime prediction point of view