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John Madinger

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Special Agent John Madinger began his law enforcement career in 1976 with the Oklahoma Bureau of Narcotics and Dangerous Drugs Control.  In 1978, he became and agent and eventually supervisor of the Hawaii Office of Narcotics Enforcement.  In 1988, John Madinger he joined the United States Treasury Department, Criminal Investigation Division as a special Agent. John Madinger is a graduate of the Oklahoma State Police Officer Training Program, DEA's academy, and Criminal Investigator Training at the Federal Law Enforcement Training Center.  John Madinger  is the author of Money Laundering: A Guide for Criminal Investigators, Second Edition; Confidential Informant: Law Enforcement's Most Valuable Tool; and, Death on Diamond Head.

According to the book description of Money Laundering: A Guide for Criminal Investigators, Second Edition, “Many of the techniques that drug traffickers and organized crime figures use to launder money are also employed by terrorist groups - as those involved in investigating the attacks of September 11, 2001 soon discovered. These techniques and their perpetrators have grown in number and sophistication, creating an urgent need for investigators to develop strategies that will help keep them one step ahead of the game.

Authoritative and accessible, Money Laundering: A Guide for Criminal Investigators, Second Edition is based on the author's extensive experience in law enforcement. It provides a clear understanding of money laundering practices and explains the investigative and legislative processes that are essential in detecting and circumventing this illegal and ultimately dangerous activity. In addition to being an informative and straightforward resource for those investigating complex narcotics cases or other cases in which there is a financial component, this new edition addresses techniques used to track down the money trail of terrorists who are highly motivated, well-trained, organized, disciplined - and well-funded. What's New in the Second Edition: Explains money laundering provisions under the U.S. Patriot Act; Explains how the changes in federal forfeiture law affect existing money laundering law; Clarifies current legislation and how it affects money laundering investigation; Outlines the basics as well as the emerging trends of terrorist financing; and, Includes two new chapters on the investigation of terrorist activities.


One reader of Money Laundering: A Guide for Criminal Investigators, Second Edition, said, “As a Canadian police officer, I picked up this book expecting to find its understandable American focus to be of limited use to me. Instead I was very surprised. Yes it is entirely American in focus and reference, but its explanation of laundering methodologies - and weaknesses - was exceptionally straight forward and of universal application. I was able to apply several aspects immediately to an existing international investigation of commercial fraud. It is in its explanations that the book is strongest. These are simply written, without jargon. For example, using the analogy of Al Capone's enterprises, it gives the best and simplest description of a balance sheet and financial statement and what goes into their makeup that I have ever seen. When this began I was suspicious that the Capone analogy was going to have to be stretched beyond any usefulness, but this turned out not to be the case at all. In fact, the analogy gave the explanations life and character.  Its outline of resources, to consider was equally direct and useful, even to a Canadian investigation.”


One reader of Money Laundering: A Guide for Criminal Investigators, Second Edition, said, “This is more than a text book. It's a excellent primer in money laundering. It gives examples from the most simple to the most complex methods of hiding illegally obtained money from the prying eyes of law enforcement. I could have used this early in my career. I recommend this book to anyone interested in learning the how's of money launderers. A second edition is now out.”


According to the book Confidential Informant: Law Enforcement's Most Valuable Tool, “He baffled and eluded law enforcement officers for nearly two decades. In the end, however, it wasn't the painstaking forensic analysis of hundreds of pieces of crime scene evidence that led to the capture of the Unabomber-but the lucky tip of an informant. Truth of the matter is, for all their sophistication and hi-tech science, crime-fighting techniques such as fingerprint and DNA analysis are a factor in less than one percent of all criminal cases. In the overwhelming number of crimes, informants have provided the necessary ammunition needed to bring criminals to justice, from Genovese to Gotti and Capone to Dillinger. Confidential Informant: Understanding Law Enforcement's Most Valuable Tool explores the covert and clandestine world of informants-revealing the secrets of how to find them and make the most out of them, while at the same time, avoiding the pitfalls of dealing with them. Using case studies in which informants played key roles in solving crimes, the book examines all aspects of informant development and management, from the motivation of the informant to the legal problems that accompany the use of informants in criminal cases. Written by John Madinger, a former narcotics agent, supervisor and administrator, and currently a Senior Special Agent with the Criminal Investigation Division of the Internal Revenue Service, Confidential Informant: Understanding Law Enforcement's Most Valuable Tool examines the emotional and behavioral characteristics of the informant, as well as the psychology of trust and betrayal. The book also illustrates techniques for improving interviewing and communication skills when dealing with informants, and provides invaluable forms that can be used in connection with these vital sources of information.”


One reader of Confidential Informant: Law Enforcement's Most Valuable Tool said, “This is an excellent book for both those interested in how those in law enforcement deal with informants & those in law enforcement who have to deal with informants. I found his admonition to control the informant especially important. Most CIs know how to work the system & if not careful they'll work you too. Should be required reading for anyone in law enforcement.”


One reader of Confidential Informant: Law Enforcement's Most Valuable Tool said, “This book was well written, and detailed. The lessons were followed buy examples that illustrated the key points. I am now preparing to go into narcotic's, and the author has vast knowledge in the subject of narcotic's. This was an excellent beginning to the use of informants. The author has clearly set up the parameters for the selection, preparation, and use of informants. The cases that are talked about in the book are from taken from current and historical cases, both narcotics and other crimes. I found this book very interesting. I have loaned it out to a fellow Officer who has commented that it is an excellent book and he has been in narcotics for 7 years.”

One reader of Death on Diamond Head said, “Great quick police procedural read! Lead character has likeability and a good sense of humor. Author clearly has solid understanding of law enforcement and the criminal justice system, specifically of the HPD and justice in Hawaii. Also weaves local flavor and geography into the story so it can be developed as a character in it's own right. Hope we see more from Kimo Rigg.”

Money Laundering: A Guide for Criminal Investigators, Second Edition
John Madinger  More Info

Confidential Informant: Law Enforcement's Most Valuable Tool
John Madinger  More Info

Death on Diamond Head (A Kimo Rigg Mystery)
John Madinger  More Info

Betty Shimabukuro of the Honolulu Star-Bulletin said of Death on Diamond Head, The hero’s name is Kimo, the title sounds like it could’ve come out of “Hawaii Five-0,” the serial killings at hand involve the mutilation of young women. As a fan of the genre, you’ve been there, read that before. But John Madinger’s mystery’s got some fresh stuff. His central character is a cop, yes, but a fairly cheerful one with no alcohol problems who has a good relationship with his ex-wife and young son. He also has a stunning car and loads of money, thanks to a lawsuit against certain of his superiors who schemed against him after he exposed wrongdoing in the department.

No haunted, lonely detective living in a dive just a step ahead of the bill collectors. Been there, read that before, too. The author is a former U.S. Treasury Department criminal investigator with 30 years experience, mostly in Hawaii. He’s written textbooks on money laundering and criminal informants. So on many fronts -from technical details to the local neighborhoods—he knows of what he writes, and his style is crisp and breezy. The book, despite its grisly crimes, doesn’t take itself too seriously. The many side characters are interesting, with the exception of Kimo’s rage-filled boss, Edmund Chin, also known as Special Ed, who is so one-dimensional he could’ve come out of a bad sitcom. The best part of the story is actually a secondary case - a tagger who’s been defacing walls all over town. Kimo’s solution to that crime is truly original.”


According to the book description of Death on Diamond Head, it “is a murder-mystery novel introducing the character of Honolulu police detective Kimo Rigg, a veteran cop whose career has been sidetracked by a whistleblower lawsuit. Rigg has been relegated to the Unsolved Crimes department in the bowels of the precinct headquarters. He is trying to stay out of trouble when he finds himself in hot water once again: A murder victim's body is dumped almost on the doorstep of his new house at Diamond Head. Five years earlier, a series of brutal slayings had torn Honolulu apart. When the bodies of young girls started turning up at island beach parks, HPD pulled out all the stops to catch the man they called the Double-Crosser. When their prime suspect was found dead and the killings abruptly stopped, everyone had figured the case was closed. Now, Rigg isn't so sure. The latest killing has all of the Double Crosser's trademarks, and there's another tie to the old case; the victim was a key witness against their old suspect. That's one too many coincidences for Rigg, who now must follow a twisting path into the dark heart of a case no one wants reopened.

About the Department of Treasury

The Department of the Treasury is organized into two major components the Departmental offices and the operating bureaus. The Departmental Offices are primarily responsible for the formulation of policy and management of the Department as a whole, while the operating bureaus carry out the specific operations assigned to the Department. Our bureaus make up 98% of the Treasury work force. The basic functions of the Department of the Treasury include: Managing Federal finances; Collecting taxes, duties and monies paid to and due to the U.S. and paying all bills of the U.S.; Producing postage stamps, currency and coinage; Managing Government accounts and the public debt; Supervising national banks and thrift institutions; Advising on domestic and international financial, monetary, economic, trade and tax policy; Enforcing Federal finance and tax laws; Investigating and prosecuting tax evaders, counterfeiters, and forgers.


About the Oklahoma State Bureau of Narcotics and Dangerous Drugs

The Oklahoma State Bureau of Narcotics and Dangerous Drugs Control is a law enforcement agency with a goal of minimizing the abuse of controlled substances through law enforcement measures directed primarily at drug trafficking, illicit drug manufacturing, and major suppliers of illicit drugs.

The following divisions make up the OBNDD: Diversion, Intelligence, and Enforcement:


The Diversion Division of OBN investigates cases in which legally manufactured and distributed pharmaceutical controlled substances are diverted into an illegal market. Agents are trained to conduct complex investigations and audit professional handlers of controlled drugs. Because of the regulatory nature of these kinds of controlled substances, Agents work on both criminal and administrative cases.



The Oklahoma State Bureau of Narcotics and Dangerous Drugs Control Intelligence Division utilizes specialized techniques in conjunction with traditional drug enforcement investigative methods to address prioritized significant drug trafficking organizations.



The Bureau's largest section contains Agents at each district office and at headquarters who primarily enforce Title 63 of the Oklahoma Statutes and applicable federal statutes under Title 21 of the United States Code. The Agents not only conduct small undercover drug purchases, but also investigate multi-jurisdictional complex conspiracy cases, which require criminal investigative expertise. Marijuana eradication is a primary of Enforcement Agents. However, because of new, simpler methamphetamine recipes surfacing, these Agents are spending greater amounts of time investigating the manufacturing and sale of domestically-produced methamphetamine.


Source: ok.gov/obndd/About_OBNDD

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