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  • © Marble Technology Inc, 2026.
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    1. Tax Library
    2. US
    3. Internal Revenue Manual
    4. Part 9
    5. Chapter 4

    Chapter 4 - Investigative Techniques

    Browse Chapter 4 - Investigative Techniques
    in: Chapter 4 - Investigative Techniques
    Previous Chapter 3 - Disclosure and PublicityNext Chapter 5 - Investigative Process
    Section 1 - Investigation InitiationSection 11 - Investigative ServicesSection 12 - ArrestsSection 13 - Financial Investigative Task ForceSection 2 - Sources of InformationSection 4 - Requests for InformationSection 5 - InterviewsSection 6 - Surveillance and Non-consensual MonitoringSection 7 - Consensual MonitoringSection 8 - Undercover OperationsSection 9 - Search Warrants, Evidence and Chain of Custody
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