John R. Dagnan

IRS Criminal Investigation, Special Agent (Retired)

LocationBirminghamAlabama, United States
Current roleLitigation Financial AnalystFSA Federal · since Apr 2025
Government service20yrsInternal Revenue Service (IRS)

About

Proven and proactive investigator with 20 years in federal law enforcement. Specializing in financial crimes such

as money laundering, tax evasion, tax fraud, the bank secrecy act, embezzlement, payroll tax fraud and aggravated

identity theft. Resourceful investigator with additional experience in corporate fraud, financial institution fraud,

bankruptcy fraud, narcotics, gaming, healthcare fraud, identity theft schemes, and public corruption.

Roles

Apr 2025–Present
Current role

Litigation Financial Analyst

FSA Federal

Birmingham, Alabama

Federal contract employee supporting the overall mission of the United States Attorney’s Office.

Assists the legal team by tracing, reviewing, and analyzing financial records from investigations to determine

the source and delivery of funds, including the nature and volume of transactions. This includes

understanding account relationships, following criminal proceeds and identifying assets and funds that meet

thresholds and legal requirements for forfeiture.

Assists prosecutors in preparing for court proceedings by developing legal theories for forfeiture and

preparing exhibits, charts, and abstracts of the financial evidence.

Provides testimony in U.S. District Courts.

Mar 2002–Mar 2022
Former role

Special Agent

Internal Revenue Service (IRS), Criminal Investigation

Alabama

Planned, conducted, and led large, complex and sensitive financial investigations involving tax evasion, tax

fraud, embezzlement, money laundering, bank fraud, identity theft, bankruptcy fraud, conspiracy, wire fraud,

narcotics, currency structuring, gambling, healthcare, public corruption and elder fraud.

Analyzed numerous complex financial documents to obtain evidence, trace the flow of money through

banking and investment accounts, identify assets, purchases of property and other tangible assets related to tax

fraud, structuring, money laundering and other financial crimes.Affiant and author of numerous arrests, search and seizure affidavits and other legal orders related to criminal

investigations.

Worked investigations in Organized Crime Drug Enforcement Task Force (OCDEFT) and High Intensity

Drug Trafficking Areas (HIDTA) groups.

Partnered with other local, state, and federal law enforcement, regulatory agencies and financial institutions in

developing criminal investigations.

Worked directly with IRS Criminal Tax Counsel, Department of Justice Tax Division and the United States

Attorney’s Office to further investigations and make prosecution recommendations.

Produced detailed memorandums of interview and prosecution reports citing evidence in support of criminal

violations for IRS Management, IRS Attorneys, Department of Justice Attorneys, and the U.S. Attorney’s

Office.

Prepared for numerous trials and gave testimony in Federal Grand Juries and U.S. District Courts.

Maintained Top Secret Clearance throughout my career as a Special Agent.

Other Responsibilities Included:

SPECIAL AGENT, Computer Investigative Specialist (CIS)

Electronic Crimes Division | October 2015 – September 2019

Performed computer and network forensics to seize and preserve digital evidence.

Trained in mobile forensics. Applications included Cellebrite, Nuix, EnCase and FTK.

SPECIAL AGENT, Coordinator

North Alabama Financial Crimes Task Force | August 2009 – September 2015

Developed criminal investigations and asset forfeitures based on analysis of financial institutions filings as

required by the Bank Secrecy Act, such as Currency Transaction Reports and Suspicious Activity Reports.

Conducted numerous criminal and civil asset forfeitures based on violations of the Bank Secrecy Act in

partnership with the United States Attorney’s Office.

Managed, supervised and coordinated the investigative activities of the task force.

Worked with state and local law enforcement partners assigned to the task force in developing investigations.

Handled the administrative activities of the task force, including securing funding, equipment, and payment of

expenses.