516.338.2840
Interstate Security - Long Island's Top security training school, Security guard company and private investigation firm.
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Private Investigation Services

Interstate Security & Investigations Inc. is a fully licensed and bonded private investigation firm that conducts local, national and international investigations. All of our investigators are New York State’s leading experts; having served in various law enforcement agencies for over 25 years.

We are committed to our clients; and move quickly and effectively to meet deadlines. Our rates are competitive, with no hidden fees.



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Overt and Covert Surveillance, Use of video and GPS devices. Learn more about our surveillance services.
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Learn more about why Interstate Security should conduct your confidential investigation. More>

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                Questions? Visit
                our FAQ page
                or inquire here!



    Contact us for a
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