Cowan Investigations

A Private Investigative Agency You Can Trust

About Cowan Investigations

Founded by Former Jersey City Police Chief Bob Cowan

Cowan Investigations is a full-service New Jersey Private Investigation Firm founded by Former Jersey City Police Chief Bob Cowan. With thirty-five years of law enforcement experience in New Jersey’s second-largest municipality, Mr. Cowan is joined by an impressive team of former street cops whom have the best work ethic in the industry – 24/7/365

At Cowan Investigations we truly believe that trust is an absolute foundation for any investigation. This is why over the years; we have worked diligently to develop and build upon the trust that our clients have provided us. We have worked in the investigative industry long enough to understand that clients expect more than just high-tech gear and effort, our clients expect results. This trust along with our experience and tenacity for investigations has contributed to our outstanding success rate.

Our team includes Jersey City Police Captain Joe Ascolese (Ret), Deputy Chief Tom Cowan (Ret). The Cowan Investigation’s Criminal & Civil Investigation Department is staffed by some of the most experienced and competent investigators on the east coast – Captain Brian Duval (Ret) from the Hudson County Prosecutors Office, 1st Grade New York City Detective Matt Del Rosario (Ret) and Sergeant Jeff Lugo, Guttenberg Police Department (ret), Lt. Rich Frascella (Ret) from the Mercer County Prosecutor’s Office

The Cowan Investigations Litigation Support Team continues to be the premier Investigative Team in New Jersey.

Bob Cowan, Joe Ascolese, and Tom Cowan not only supervised police work on the streets of Jersey City over the course of their careers, but they were also on the streets 24/7/365 days a year working side by side with the Jersey City Police Officers they oversaw. Likewise, over the course of Captain Brian Duval’s remarkable career in the Hudson County Prosecutors Office, Brian was out on these same streets working with our team toward the common goal of providing above-standard law enforcement services to Hudson County and Jersey City Residents.

Also on the Cowan Investigations Team is Michael Mancuso who is the Director of Forensic Investigations at Cowan Investigations. Mr. Mancuso is retired from the New Jersey Attorney General’s Office where he was an expert in Computer Forensics, Electronic Surveillance and has conducted in excess of one thousand Polygraph Examinations.

Private Investigator New Jersey Bob Cowan retired Chief of Police

We Are a Team of Former Law Enforcement Professionals

From street cops to Private Investigators, we are prepared to put our vast wealth of experience and knowledge to work for you.

Over 35 Years Of Experience

Our experienced and professional team of street-savvy private investigators is available. Call today for a free consultation.

We Work Investigations 24/7/365 a Year

You won’t find a group of 9:00 am to 5:00 pm administrative pencil pushers here.


We Do The Job Right The First Time


Bob Cowan’s 35-year career in law enforcement gives our team the competitive edge you need on your side to help you efficiently accomplish your investigative goals.


Having worked closely with the community, our professional investigators understand your specific needs and are truly masters of their craft in investigations.


We strongly believe in always doing what is truly right, even if it means more work for our investigators, all evidence will be legally acquired and admissible in court.

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