Executive Staff


First Assistant Prosecutor - Cary Shill

In 1989, First Assistant Prosecutor Cary Shill began his career as a prosecutor when he joined the Atlantic County Prosecutor’s Office. In 2006, he was promoted to Chief Assistant Prosecutor. During his tenure with the Office, he has supervised the Trial Unit, Atlantic County Shooting Response Team, Gangs, Guns and Narcotics Unit, Violent Crime Unit and Computer Crimes Unit. In 2003, Mr. Shill successfully prosecuted the last trial in which a defendant in New Jersey was sentenced to death. In 2006, he received the Outstanding Victim Advocacy in a Single Case Award from the County Prosecutors Association of New Jersey. In 2004, Mr. Shill was honored to be awarded the Crime Victim Service Award by the New Jersey Division of Criminal Justice. Mr. Shill is certified by the New Jersey Supreme Court as a Criminal Trial Attorney. From 1990 to 1993, he was an assistant prosecutor at the Essex County Prosecutor’s Office.  In 1985, Mr. Shill received his Bachelor of Arts degree from Trenton State College. In 1988, he graduated with a law degree from the Florida State University College of Law.

Deputy First Assistant Prosecutor - Mario Formica

Mario Formica serves as a Deputy First Assistant Prosecutor at the Atlantic County Prosecutor’s Office. Formica is a lifelong resident of Atlantic County and was born and raised in the "Ducktown" section of Atlantic City.

He graduated Magna Cum Laude from Richard Stockton University with a bachelor’s degree in psychology. After graduation from Stockton University, Formica was accepted to Rutgers University School of Law in Camden in the spring of 1996.  In 2000, graduated with a Juris Doctorate degree with honors.   Formica served as an Editor of the Rutgers Law Journal and published a scholarly note, The Violation of an Individual’s State and Federal Constitutional Rights Should Be a Private Matter in California, 30 RUTGERS L.J. 1377 (1999)

After graduating law school, Formica was selected to clerk for the Superior Court of New Jersey, Appellate Division, the Honorable Steven Z. Kleiner for the 2001-01 term.  While clerking, Formica wrote the legal memorandum for presiding Appellate Judge James Havey in the published opinion of Troup v. Home Associates Equity Services, 343 N.J. Super, 254 (App. Div.  2001), a predatory lending case cited nationally over 300 times.

Formica started working at the Atlantic County Prosecutor’s Office in September 2001 as an Assistant Prosecutor assigned to the Grand Jury Unit. Less than a year later, Formica was assigned to an investigative trial unit, the Violent Crimes Unit, and paired with then Chief Assistant Cary Shill.  Formica worked in VCU until September 2007 at which time he left the ACPO for a position in private practice at the law firm of Hill Wallack LLP.

In 2008, Formica to returned to the ACPO and was assigned to the Guns Gangs and Narcotics Unit.  

In 2012, Formica was promoted to Chief Assistant Prosecutor in charge of Special Litigation. He supervised 6 attorneys, handling all criminal appeals arising out of Atlantic County ranging from municipal court appeals to the New Jersey Superior Court Appellate Division to the New Jersey Supreme Court to the United States 3rd Circuit Court of Appeals.  Formica handled all appeals from denials of firearms permits, as well as the tracking of Megan’s Law registered sex offenders.

In 2013, Formica developed an original Search and Seizure instructional seminar that has been presented to local police agencies on a periodic basis from that time to the present.

In 2014, the New Jersey Supreme Court certified Formica as a Criminal Trial Attorney.

In March 2017, Prosecutor Tyner named Formica, Deputy First Assistant Prosecutor. Formica retained prior duties as supervisor of the Special Litigation Unit, and now supervises two chief assistant prosecutors handling:  the Guns, Gangs and Narcotics Unit, and the newly created Bail Screening Unit.

Deputy First Assisant Prosecutor - Diane Ruberton

Diane Ruberton serves Atlantic County as the Deputy First Assistant Prosecutor.  She supervises the Trial, Special Victims, Computer Crimes, Financial Crimes, Bias Crimes, Official Corruption and Internal Affairs Units.  She also supervises the Grand Jury Unit which includes overseeing the screening of over 6,500 criminal complaints annually, managing pre-indictment matters, and training new Assistant Prosecutors.

Ruberton is a graduate of Villanova University, 1992, and received bachelor’s degrees in Psychology and Criminal Justice.  She attended Widener University School of Law where she was a law review editor and graduated cum laude in the top 10% of her class.  She was admitted to the bars in New Jersey and Pennsylvania in 1995.

Upon her graduation from law school, Ruberton served as a judicial law clerk for the Honorable Arthur Guerrera and the Honorable Robert Neustadter in the Criminal Division of Superior Court in Atlantic County.  Following her clerkship, she served as an Assistant District Attorney in Delaware County, Pennsylvania from 1996 to 1997.  In 1997, Ruberton returned to Atlantic County as Assistant County Counsel, representing the County in various areas of civil litigation in Superior Court, Federal District Court, and the 3rd Circuit Court of Appeals.

Ruberton joined the Atlantic County Prosecutor’s Office in 1999 as an Assistant Prosecutor.  During her tenure as an Assistant Prosecutor, she served in the Grand Jury, Trial, Financial Crimes, Insurance Fraud, Crimes Against Children, Fatal Collisions Investigations and Official Corruption units, providing legal advice and direction to investigative staff and trying cases.  She was promoted to Trial Team Leader in 2005, Supervising Assistant Prosecutor of the Fatal Collisions Investigations Unit in 2010, and Chief Assistant Prosecutor in 2011. 

From 2012 through 2016, Ruberton served as the First Assistant Prosecutor.  As the First Assistant, she supervised the legal staff of 41 Assistant Prosecutors and Chief Assistant Prosecutors and the Office of Victim Witness Advocacy. She trained law enforcement officers in conducting internal affairs investigations and complying with the Attorney General’s Directive on Internal Affairs.  She also supervised and reviewed the investigations of and conducted grand jury presentations for all officer involved shootings in Atlantic County.

From August 2016 until March 2017, Ruberton served as Acting Prosecutor, acting as the chief law enforcement officer in Atlantic County and overseeing 17 municipal police departments and the Atlantic County Sheriff’s Office.  She was the first and only woman appointed as First Assistant Prosecutor and Acting Prosecutor in Atlantic County. 

As a career prosecutor, Ruberton has tried numerous cases including narcotics, child abuse, sexual assault, aggravated assault, theft, robbery, gun violence, official misconduct, vehicular homicide and murder.  In 2011, she was certified by the New Jersey Supreme Court as a Certified Criminal Trial Attorney.

Ruberton resides in Hammonton with her family and is an active member of the community.  She serves on the Executive Board of the Atlantic County Coalition for a Safe Community and coaches youth field hockey.

Chief of County Detectives - Daren J. Dooley

Chief of County Detectives Daren J. Dooley currently commands the Detective Division of the Atlantic County Prosecutor’s Office. The Division consists of the Investigations, Litigation, and Administration Sections. The Investigations Section consists of 11 specialized units including the Major Crimes Squad (Homicide, Crash Investigations, Forensics, and Drug Related Death Investigations), Gangs, Guns and Narcotics Task Force, Special Victims Unit (Child Abuse and Sexual Assault), Arson Task Force, Official Corruption, Intelligence and Homeland/School Security Unit, Financial Crimes, and High Technology Criminal Investigations. The Litigation Section consists of both sworn and civilian personnel assigned to support the Trial, Grand Jury, Appellate & Civil Litigation functions of the Prosecutor’s Office. The Administration Section is responsible for the budget and personnel functions of the agency. These Sections are managed by Superior Officers who report to the Chief. The Chief of County Detectives reports directly to the Prosecutor.

Chief Dooley was promoted to Chief of County Detectives by former Atlantic County Prosecutor Jeffrey S. Blitz in 2004 and has served as Chief under former Atlantic County Prosecutors Theodore F.L. Housel, James P. McClain and Acting Prosecutor Diane M. Ruberton.  He continues to serve as Chief under current Atlantic County Prosecutor Damon G. Tyner.  He is the longest tenured Chief of County Detectives in the State of New Jersey.

Chief Dooley began his career in law enforcement in 1994, hired as an Investigator in the Atlantic County Prosecutor's Office. Chief Dooley worked in numerous units including Litigation, Financial Crimes, Major Crimes, Crimes Against Children, Narcotics, Administration, and has served as a member and team leader of the Emergency Response Team. He has held a variety of supervisory positions including Sergeant of County Investigators, Lieutenant of County Investigators, Captain of County Investigators, Deputy Chief and Chief of County Investigators.

Chief Dooley is a life-long resident of Atlantic County. He is a graduate of Holy Spirit High School and holds a Bachelor of Science Degree from Salisbury University, and a Master of Science Degree in Criminal Justice Administration from St. Joseph's University. He is a graduate of the Atlantic County Police Academy and the New Jersey Division of Criminal Justice Modified Basic Course for Investigators. Chief Dooley is also a graduate of the New Jersey State Association of Chiefs of Police West Point Command and Leadership Program and has served as an instructor for the program. Chief Dooley is a graduate of the 241st Session of the Federal Bureau of Investigation National Academy and has earned the designation of Certified Chief Law Enforcement Executive (CCLEE) by the New Jersey State Association of Chiefs of Police. He has also served as an instructor in the areas of firearms, chemical agents, officer survival, and interview and interrogation.

Chief Dooley is a member of the Atlantic County Association of Chiefs of Police and past President of the Association. He is also an active member of the New Jersey State Association of Chiefs of Police, the International Association of Chiefs of Police and a member and past President of the Chief of County Detectives/Investigators Association of New Jersey. Chief Dooley serves as a member of various law enforcement advisory boards and local community organizations and committees.