Ohlson Investigation And Security serves the Chicago area. We have provided a variety of investigative, guard and related security services to industrial, commercial, financial and residential companies since 1975. Same-day service is available. We are independently owned and operated with more than 32 years of experience. Our mission is to consistently offer top-notch security services to...
Security & protection is vital to your business.
Ohlson Investigation And Security serves the Chicago area. We have provided a variety of investigative, guard and related security services to industrial, commercial, financial and residential companies since 1975. Same-day service is available. We are independently owned and operated with more than 32 years of experience. Our mission is to...