Mark Ehlers is the Philadelphia City Lead for Duff & Phelps and a managing director in the Business Intelligence and Investigations practice at Kroll. He manages the full range of firm services, including fraud investigations, educational and sensitive internal investigations, litigation support, due diligence investigations, and corporate ethics and compliance monitoring. An expert on sensitive and high-risk internal investigations for corporations, educational institutions, government agencies and non-profits, Mark has more than 30 years of combined legal, financial, and investigative experience in the public and private sectors, working on matters including corporate fraud, discrimination and harassment in the workplace, security and sexual violence on campuses, economic crimes, and alleged ethical violations.

Mark has led many of Kroll’s highest-profile investigations, including sensitive sexual misconduct cases, investigations of the use of force by law-enforcement (including by campus police), high-risk internal fraud, and confidential information leak matters.  He has been responsible for recovering tens of millions of dollars for corporate clients, helped non-profits ensure that they are complying with the law and internal ethical obligations, and helped educational institutions understand the risks they face.  Mark’s clients appreciate his thorough, independent, evidence-driven approach.

Prior to joining Kroll, Mark served for 18 years as Assistant United States Attorney, first in the District of Columbia, where he was part of a select group of prosecutors in the homicide and sex offense units, and later in the Eastern District of Pennsylvania, where he investigated and prosecuted a wide range of criminal offenses, including narcotics trafficking, racketeering (RICO), money laundering, corporate fraud, identity theft, tax violations, and numerous other economic and violent crimes. For eight years, Mark was part of the Organized Crime Strike Force in Philadelphia, where he oversaw the investigation and prosecution of affiliates of Russian, Asian, and Italian criminal organizations. Prior to that, Mark was a private attorney in Washington, D.C., where he handled cases involving commercial, antitrust, trademark infringement, securities fraud, and environmental disputes.

 Professional Experience
  • Educational Investigations
    Mark has conducted and/or overseen over 75 Title IX-related investigations of alleged sexual harassment, sexual assault, and stalking incidents at public and private universities, liberal arts colleges, and private K-12 schools throughout the eastern and midwestern United States. He has also conducted policy and procedure reviews, consulted with schools on how they handled sensitive investigations, and conducted compliance, climate and culture reviews of academic departments.
  • Corporate Internal Investigations
    Mark has managed and conducted countless internal investigations for corporations, governments, universities, and non-profit organizations, investigating legal and ethical violations, financial improprieties, thefts of company assets, damage to company property, workplace misconduct, and complex financial fraud.
  • Public Sector Investigations and Reviews
    Mark has conducted and managed independent reviews of public sector clients including state and local police departments, regulatory agencies, and public universities. In recent years, Mark investigated the University of Cincinnati Police Department following the shooting of an unarmed motorist in July 2015; reviewed admissions practices at the University of Texas at Austin following allegations of undue influence in the admissions process in 2014; and reviewed the North Carolina Highway Patrol’s hiring and selection process, ethical training, and supervisory training protocols following media reports of trooper misconduct in 2008. Kroll’s findings and recommendations in each of these investigations were made public.
  • Workplace Investigations
    Mark has conducted numerous investigations involving allegations of discrimination and harassment in the workplace. He also has lectured on how to properly investigate claims alleging discrimination and a hostile work environment, as well as sexual assault claims in the college and university (Title IX) context. Additionally, Mark has investigated death threats against company executives and bomb threats against company facilities, and has conducted risk assessments for workplace violence and crisis management situations.

  • Admissions Scandal Investigation is a Wake-Up Call to All Institutions,” University Business,  (April 2, 2019). 
  • University-Based Internal Investigations: 12 Basic Principles,” (Kroll Blog, December 14, 2015).
  • “Keeping Up with the Clery Act: Staying Ahead of Campus Security and Safety,” (Kroll Blog, November 3, 2014).
  • “The Chief Compliance Officer: The Need for Authority and Independence,” The Philadelphia Monitor (Kroll-Philadelphia Newsletter, Summer 2009).
  • “The Marc Rich Case: Extension of Grand Jury Subpoena Power to Non-Resident Alien Corporations,” 18 Geo. Wash. J. Int’l & Econ. 97 (1984).

 Education and Certifications
  • J.D., George Washington University, with Honors
  • B.A., magna cum laude, Wittenberg University

Awards and Recognition
  • Department of Justice Special Achievement Awards (1992, 1993, 1995)
  • DEA Special Recognition Awards (2000, 2002)
  • FBI Special Recognition Awards (2003, 2006)
  • IRS Special Recognition and Exceptional Service Awards (2006)
  • Letter of Commendation from FBI Director Robert S. Mueller, III (July 20, 2006)
Ehlers /en/our-team/mark-ehlers /-/media/kroll/images/headshots/managing-directors/mark-ehlers.jpg people {01699FB1-A280-41EA-B450-4639512275D3} {2DEEE4D2-8278-4C50-B3FF-1563BB257804}

Other Areas We Can Help


Compliance Risk

In a Time of Pandemic and Sanctions It Pays to Get to Know Your Vessels

Compliance Risk