A New York Times article published Tuesday reported that the investigator who led an internal review of the Department of Homeland Security following a 2012 prostitution scandal resigned in August after dealing with allegations of his own misconduct.

The article reported that investigator David Nieland was implicated in a separate incident involving himself and a prostitute, according to current and former DHS officials.

Nieland ultimately resigned on Aug. 9, claiming that health problems had pushed him into retirement.

He played a chief role in determining whether the Obama administration intentionally concealed the involvement of a volunteer White House aide, Jonathan Dach ’08 LAW ’13, in the prostitution scandal that took place during a trip to Colombia in April 2012. Several Secret Service agents on the trip were dismissed as a result of the investigation, while Dach was never found to have committed any wrongdoing.

Dach currently works at the State Department in the Office of Global Women’s Issues.