Prosecutor’s Bio

Mary E. Colalillo was appointed Camden County Prosecutor by Governor Chris Christie in June 2014. She came to the Prosecutor’s Office after 21 years as a judge in Superior Court of Camden County, serving in the Family, Criminal, Equity and Civil divisions. The Prosecutor was Presiding Judge in the Civil Division from 2005 to 2007, followed by a term as Presiding Judge in General Equity from 2007 to 2014, where she was responsible for Chancery and probate matters. Prosecutor Colalillo had extensive experience as a litigator before being appointed to the bench in 1993. That included working from 1980 to 1984 as an Assistant Prosecutor with the Camden County Prosecutor’s Office and eight years of private practice, from 1984 to 1992, during which she developed an expertise in civil cases ranging from personal injury work and insurance coverage to malpractice cases. She served as First Assistant Camden County Counsel from 1992 to 1993. The Prosecutor graduated from Georgian Court College with a Bachelor’s degree in 1973 and received her Juris Doctor in 1976 from Vermont Law School. She is a certified criminal trial attorney in New Jersey and is a member of the New Jersey State Bar Association and Camden County Bar Association.

First Assistant Prosecutor’s Bio

First Assistant Prosecutor Dana R. Petrone began her public service career in 1993 when she joined the Camden County Prosecutor’s Office after a clerkship with Superior Court in Camden County in 1992.   First Assistant Petrone has been a career prosecutor and was assigned to numerous units in the Prosecutor’s Office including Motions and Appeals, Juvenile, Trial Team, Grand Jury, Megan’s Law and Domestic Violence.  In December 2009, she was promoted to Deputy Section Chief of the Grand Jury Unit and was and became Section Chief of that Unit in 2013.  She was responsible for supervising and overseeing the screening of more than 10,000 cases per year and managing all pre-indictment matters.   She received a Bachelor’s Degree in Economics from The University of Pennsylvania in 1988 and her Juris Doctor in 1992 from Rutgers University School of Law – Camden.


Chief’s Bio

Chief of Detectives William Townsend began his career in law enforcement in 1993 as a Special Police Officer with the Ocean City Police Department.  He then joined the Washington Township Police Department as a patrol officer in 1994.  He was promoted to the rank of Corporal in the patrol division in 1998.  He was then hired as a Detective with the Camden County Prosecutor’s Office in 2000. As a Detective, Chief Townsend worked in the Grand Jury Unit, Special Prosecutions Unit/ Joint Terrorism Task Force, the Major Crimes Unit, and the Federal Bureau of Investigation/ Violent Crimes Task Force.  He was promoted to the rank of Sergeant in 2010 where he supervised the Major Crimes and Fugitive Units.  Chief Townsend was promoted to the rank of Lieutenant in 2013 where he supervised the Major Crimes and Special Victims Units. After being promoted to Captain in June of 2015, he began to supervise the daily operations of the Homicide and Narcotics Units. Chief Townsend was sworn in as Deputy Chief in January of 2018 and again to Chief on June 29, 2018.  He now oversees a staff of 106 sworn detectives and 10 agents.  Chief Townsend possesses a Bachelor’s Degree in Criminal Justice from the University of Delaware.