Making Maryland's DNA Law Work for Public Safety

Message from the Governor

Dear Friends,

Over these past two years, even in difficult economic times, we have continued to protect our shared priorities: strengthening Maryland’s middle class, expanding opportunities for more of our citizens, and protecting the most sacred obligation a government has to its people – that of public safety.

Together, we’ve expanded DNA fingerprinting to include individuals arrested and charged with Crimes of Violence, closed the backlog of 24,000 DNA samples we inherited from our predecessors, and reformed Parole and Probation to better target violent offenders. Working with our regional and local partners, we created cross-border law enforcement partnerships to crack down on gun violence and gang activity, and we have begun procedures to dramatically improve communication among state and local law enforcement and first responders.

Please take the time to browse this website and discover the many ways Maryland is leading the nation in innovative techniques and partnerships to improve public safety everywhere in our State.


Martin O'Malley, Governor

DNA Investigations in Maryland

DNA Investigator

Maryland has maintained a DNA database since 1994 when the Maryland General Assembly enacted legislation that required all convicted sex offenders to submit DNA samples. As DNA collection and analysis proved to be an exceptional crime-fighting tool, the Maryland legislature expanded the boundaries for collection of DNA from convicted criminals.

Starting in January, 2009, individuals arrested and charged with crimes of violence, 1st, 2ndor 3rd degree burglary or attempting these crimes are now required to provide a DNA sample.

The use of DNA technology to identify offenders and solve criminal cases quickly is a vital instrument in Maryland’s mission to provide safe and sustainable communities for every Maryland resident.

SB211 requires the Maryland State Police to maintain a website providing information on the law concerning DNA samples and analysis. This website, maintained by the Governor’s Office of Crime Control & Prevention in collaboration with the Maryland State Police, fulfills that requirement.


1994 – Maryland enacted legislation establishing its Statewide DNA Database and requiring all convicted sex offenders to supply a DNA sample.

1998 – The first CODIS hit in Maryland linked two unsolved Prince George’s County cases.

1999 - The Maryland General Assembly expanded the DNA database to include DNA samples from individuals convicted of murder, robbery, robbery with a deadly weapon, 1st degree assault, and certain attempted crimes.

2000 – The first NDIS hit from Maryland was made between an unsolved 1998 Anne Arundel County sexual assault case and an Illinois offender.

2002 – The Maryland Legislature expanded the DNA database to include all convicted felons and misdemeanor crimes of 4th degree burglary, or breaking and entering a vehicle.

2006 – The 500th DNA hit in Maryland was reported.

January, 2008 – The Maryland State Police, Forensics Sciences Division, under the direction and support of Governor O'Malley, eliminated the more than 24,000 sample backlog.

July, 2008 – The 1,000th DNA hit was reported.

January, 2009 – Maryland’s DNA database was expanded to include individuals arrested and charged with Crimes of Violence, 1st, 2nd, and 3rd degree burglary, and any attempts of those crimes.

Staff Contact Information

Patty Mochel
Communications Manager
Governor's Office of Crime Control and Prevention
300 E. Joppa Road, Suite 1105
Baltimore, MD 21286
Direct Office: (410) 821-2845
Main Office: (410) 821-2828
Fax: (410) 321-3116


Office of the Governor