At least six career staff were placed on leave after DHS opened an investigation into whether they misled the agency’s acting director, Madhu Gottumukkala, into taking the test.

At least six career staffers at the Cybersecurity and Infrastructure Security Agency were suspended with pay this summer after organizing a polygraph test that the agency’s acting director, Madhu Gottumukkala, failed.

The Department of Homeland Security opened an investigation into whether the staff provided “false information” about the need for the test — which was scheduled after Gottumukkala sought access to certain highly sensitive cyber intelligence shared with the agency.

This article is based on interviews with eight current and four former U.S. cybersecurity officials, including multiple Trump administration appointees, who have either worked closely with Gottumukkala or have knowledge of the polygraph examination and the chain of events that followed. They were granted anonymity for fear of retribution.