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  1. Office of Executive Inspector General for the Agencies of the Illinois Governor

Grant Review Initiative Team (GRIT) Investigative Members 


Edward Escamilla, Supervising Investigator

Edward Escamilla joined the OEIG in 2009, and has a combined 14 years of investigative experience. Mr. Escamilla serves as Supervising Investigator in the OEIG’s Chicago office. Prior to joining the OEIG, he was a Detective, Training Officer, and Patrol Officer for the Metropolitan Police Department in Nashville, TN as well as a Patrol Officer for the City of Chicago. During his time at the OEIG, Mr. Escamilla has conducted numerous investigations, one of which resulted in a finding of $18 million in State grant funds being improperly used. He is a graduate of Western Illinois University and a Certified Inspector General Investigator.

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Stephen Peters, Supervising Investigator

Stephen Peters joined the OEIG as a Supervising Investigator in November 2014. Mr. Peters came to the OEIG from the Illinois Department of Revenue. Prior to working with the Department of Revenue, Mr. Peters completed a 22 year career in law enforcement, serving as a Patrol Officer, Detective, Sergeant, and Shift Commander before retiring as a Lieutenant with the Springfield Police Department (SPD). While a law enforcement officer, Mr. Peters served as an Internal Affairs Investigator, Illinois Transportable Emergency Communication System team member, and Hostage Negotiations Team Commander. Mr. Peters has a Bachelors degree from Illinois State University.

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Melissa Brandenburg Investigator

Melissa Brandenburg joined the OEIG as an investigator in September of 2012. Prior to joining the OEIG, she was a probation officer for the Christian and Vermilion County Circuit Courts. While with the OEIG, Ms. Brandenburg has conducted various investigations related to employee misconduct and misuse of State resources, several of which required extensive financial analysis. Ms. Brandenburg completed the Grant Fraud Investigation Training Program at the Federal Law Enforcement Training Center in Glynco, Georgia in 2014. She holds a Master’s degree from Loyola University Chicago, and a Bachelor’s degree from Greenville College.

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Pat Foley, Investigator

Pat Foley joined the OEIG as an investigator in July 2012 after completing 30 years in law enforcement, retiring as the Deputy Chief of the Willowbrook Police Department. Mr. Foley has served 20 years as an Assessment Team Leader for the Commission on Accreditation for Law Enforcement Agencies (CALEA), conducting assessments on over 50 law enforcement agencies throughout the United States and Canada. Mr. Foley is experienced in grant application processes, as well as compliance monitoring and reporting. He is a graduate of the FBI National Academy, the Northwestern University School of Staff and Command, and the Southern Police Institute. Mr. Foley holds a Master’s degree from Governors State University and a Bachelor’s degree from University of Illinois-Chicago.

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Margaret Marshall Investigator

Margaret Marshall joined the OEIG as an investigator in October 2007. During her tenure at the OEIG, Ms. Marshall has investigated dozens of matters, including many related to grant fraud and financial misfeasance. Ms. Marshall has received training on financial, contract, and procurement fraud. Ms. Marshall also received grant fraud training from the Federal Law Enforcement Training Center. She is a graduate of Western Illinois University and has been certified by the Association of Inspectors General as an inspector general investigator.

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Tiffany Pryor-Wallace, Investigator

Tiffany Pryor-Wallace has been a member of the OEIG staff since 2007, and an investigator since 2009. She has investigated several matters involving alleged grant fraud. Ms. Pryor-Wallace has received training in interview techniques and procurement, among other areas. She holds a Master’s degree in Legal Studies from the University of Illinois at Springfield and a Bachelor’s degree from Illinois State University.

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