Welcome to mtinvestigation.com. CCSI a Private Investigation firm based in Billings, MT. serving Montana and Wyoming. We specialize in Private Investigation, Security, Surveillance, Fraud & Theft Identity, Civil & Criminal Cases. We also offer court testimony.


Dale Mortensen

Specializing in Criminal, Civil, Family Law, Fraud, and Probable Cause. All Cases Considered.

  • 20 years Law Enforcement experience
  • B.S. Criminal Justice
  • Interview Specialist
  • Multi Jurisdiction Trained

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