INTERSTATE SECURITY & INVESTIGATIONS INC
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New Yorks Largest & Best

Private Investigation Firm & Security Guard Training School


At Interstate Security and Investigations Inc., we bring years of experience, precision and professionalism to all that we do. Whether you are dealing with a personal matter or a complex corporate issue, our licensed private investigators are trained to uncover the truth - discreetly and legally.

Voted 2016

Best of Long Island!
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516.338.2840

313 Post Ave.
Westbury, N.Y.  11590

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  • Home
  • Private Investigation Services
  • Security Guard Training
  • Contact