Our firm has been utilizing the investigative services of Warren J. Sonne…since 1991. During this period of years, they have effortlessly, relatively inexpensively and without delay performed investigations for us, with their associates, in NY, NJ, Florida, Taiwan, Belgium, Poland and Puerto Rico.

Nationally they have, in response to news bulletins and notice from clients, arrived at accident scenes before police investigators to identify, locate, interview and obtain valuable statements from witnesses. They are extraordinarily proficient in obtaining complete, detailed statements from police, fire and emergency personnel. We have been the source of information to impartial municipal authorities conducting investigations, based upon materials furnished to us by Warren Sonne.

We have been very impressed with their skill at computerized investigation utilizing public, proprietary and governmental data bases to locate information, and prepare comprehensive reports on individuals, businesses and experts (both legitimate and junk scientists).

The most outstanding characteristic of Warren Sonne is dedication and conviction to never say “No” to, “finding the truth.”

Edward L. Birnbaum

Herzfeld & Rubin, P.C.
Attorneys at Law
40 Wall Street, New York, NY



For the last five years, I have worked with Mr. Sonne of SunState Investigative Services.

Mr. Sonne has consistently provided expeditious and professional services. I consider Mr. Sonne to be a necessary and integral part of the team that I bring together to assist in the representation of my clients, which include, but are not limited to, Fortune Ten Corporations.

Therefore, I, in all confidence strongly recommend Warren Sonne of Sun State Investigative Services. Should you have any questions, please do not hesitate to contact the undersigned.

Very truly yours,

Peter J. Fazio

757 Third Avenue, New York, NY 10017