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National Criminal Investigation DNA Database

The National Criminal Investigation DNA Database (NCIDD) provides Australian police and forensic scientists with a powerful national investigative tool, which crosses all state and territory boundaries.

Australian police use DNA evidence to inform or support investigations. The NCIDD helps Australian police solve crime by linking DNA profiles from a crime scene with convicted offenders throughout Australia. The database also allows police to match profiles from two or more unsolved crime scenes, linking seemingly unrelated police investigations.

DNA profiling is a forensic identification tool of considerable power. The chance of two unrelated individuals sharing the same DNA profile is in the order of one in a billion; making a match between a crime scene profile and that of a suspect a crucial importance.

DNA evidence has been used to implicate criminals in serious offences such as sexual assault, armed robbery and murder, as well as helping to solve many high volume crimes such as burglary. Just as importantly, DNA has also clearly established the innocence of many people who might otherwise be suspects for a crime. The database is also used to assist identification of deceased or missing persons.

It is available 24 hours, seven days a week to all Australian police agencies. It has been operational nationally since April 2001 and since then more than 837 000 DNA profiles have been uploaded. The NCIDD contains DNA profiles from samples collected by Australian police from crime scenes, convicted offenders, suspects, items belonging to missing persons, and unknown deceased persons.

The agency works with police agencies to ensure NCIDD operates in accordance with relevant Commonwealth, state and territory legislation that governs the collection and matching of DNA profiles.

Last updated
18 October 2016