Bi State Security and Investigative Services Inc.
PO Box 1533
O'Fallon, IL 62269

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Bi State Security and Investigative Services Inc. is a full service licensed and insured Private Detective Agency and Security Contractor Agency operating in Illinois. We offer a variety of services to our clients and can accommodate a large company or the individual looking for answers. Go to our Services and Fees page to see a complete list of the services we offer.
All of our investigators are retired or active law enforcement officers and have hundreds of hours of training and years of experience working in the law enforcement field. This training and experience provides our clients with a professional  investigator capable of obtaining the results you need at an affordable rate. 

At Bi State Security and Investigative Services Inc. we are committed to maintaining the highest standards of ethical conduct and professional standards. You can rest assured your case will be handled in a professional and discrete manner. We offer the most affordable rates in the area and will work with you to meet your budget needs. Contact us today for a free initial consultation to discuss your investigative needs.




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