While much of the attention in the case has focused on the actions of Secret Service personnel, multiple law enforcement and congressional sources tell FoxNews.com that investigators also discovered two White House advance team members checked in prostitutes as overnight guests at a Cartagena hotel in the days before President Obama’s April 13 visit.

“Three U.S. delegation members that stayed at the Hilton brought prostitutes back as overnight guests. One of them was ours (Secret Service) and the other two were White House staffers,” a high-ranking Secret Service official told FoxNews.com. “We knew very early that White House staffers were involved.” …

White House Press Secretary Jay Carney said in April, just days after Obama’s visit, that there was no indication any White House advance team members were involved in the prostitution scandal.