Charles Edwards, the acting inspector general for the Department of Homeland Security, wrote in a letter to Sen. Susan Collins that his office’s investigation into the April incident found “a hotel registry that suggests that two (non-Secret Service) personnel may have had contact with foreign nationals.” …

One of those employees, Edwards wrote, was a Defense Department employee “affiliated” with the White House Communication Agency.

The other, he said, “may have been” affiliated with the White House advance team.

The White House denied the claims Friday. And Edwards wrote that his office did not pursue those leads “because they are not DHS personnel.”