Colombia/ Washington (Indiana’s NewsCenter) - The Secret Service scandal will be the subject of a hearing in Washington later this week.
The Senate Committee on the Judiciary will have a hearing on the oversight of the Department of Homeland Security.
Secretary Janet Napolitano is expected to testify.
Two more employees with the Secret Service resigned Tuesday.
Six others were forced out last week.
The fallout continues in the widening Secret Service prostitution scandal in Columbia.
While three Secret Service agents departed the agency this week, more resignations are expected, possibly as early as Friday.
The New York Daily News is naming and showing pictures of the prostitute whose dispute over her fee turned the encounter into an international scandal.
The Washington Post also has identified two of the agents involved.
Secret Service headquarters will not confirm their names, but one was apparently on Secret Service detail for Sarah Palin and posted online that he was "checking her out" while protecting her.
The Secret Service investigation into what happened with their agents and Colombian prostitutes is widening and the fury on Capitol Hill is growing.
ABC News has learned that the agents involved will now be forced to take lie detector tests about what went down in Cartagena. Some who have been questioned have been trying to explain away their bad behavior.
The investigation into the Secret Service sex scandal widens.
As many as 20 Secret Service members and five members of the military are being questioned about wild parties and prostitutes in Colombia as they were preparing for a trip by President Obama.
Some of the Secret Service and military members were part of elite units, with intimate details of the President's trip.
Now there are questions about whether they might have endangered the man they were sworn to protect. Several members of the Secret Service have had their top-secret security clearances revoked.
ABC News learned that Secret Service personnel who've been relieved of duty for the alleged misconduct in Colombia were partying at a Cartagena brothel called the Pley Club.
According to a bouncer at the club, the 11 agents and officers had been drinking heavily during their night out, bragging how they worked for President Obama, then enlisted the services of the club's prostitutes, some choosing to pay for the "highest class" of prostitutes, who charged more than $200.
The men were part of advance security team for President Obama. About 20 members of the military, including some elite Army Special Forces, are also being investigated for their ties to the scandal.
Secret Service and Dept of Defense officials are promising a thorough investigation. That is expected to include polygraph tests for the accused, plus interviews with hotel employees as well as visits to other clubs in the area- likely including strip clubs. Surveillance video from the hotels will be requested so officials can get a sense of who was coming and going with the agents.
President Obama's trip to Colombia this weekend was completely overshadowed by a Secret Service sex scandal.
There are allegations of heavy drinking and soliciting prostitutes involving 11 Secret Service personnel and at least five U.S. service members .
Sources say one of the women refused to leave the hotel and complained that she had not been paid for her services.
After police and hotel security were called in, the officers were sent back to the United States.
Members of Congress are already planning hearings to look into the incident. Many saying they want to know if this was a one-time occurrence or routine behavior.
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