In this research we developed an online National Crime Intelligence System, which helps to store and retrieve all information about persons with criminal related record in Nigeria. As a buildup to this work, we visited all relevant organizations that are responsible for monitoring and controlling crime in Nigeria with a view to understanding their modus operandi and to examining the current shortcomings in crime monitoring and control. Legal expert’s opinions were sought in respect of administration of criminal cases in Nigeria. With the help of the intelligence information gathered, we were able to build a robust database using the oracle database tool as backend. Also, Visual Basic program was used to build the interface, which provides access medium to the database. The developed package is a crime intelligent system consisting of a distributed database, which makes it very easy to access the criminal status of every citizen and resident in a Nigerian law court and in every part of the country. It facilitates the computer storage, retrieval and processing criminal cases in Nigeria law courts. With the help of the developed software, the problem of identifying an ex-convict, the time and where a crime was committed and all other related problems would have been solved.