(CBS News) - CBS News has learned the names of two of the Secret Service agents being ousted from the agency for alleged inappropriate behavior involving prostitutes on a presidential mission to Cartagena, Colombia.
USSS supervisor David Chaney was the supervisor who was allowed to retire. USSS supervisor Greg Stokes was "removed with cause" and has the option to appeal the decision within 30 days. He was recently listed on the internet as the supervisor of the Canine Training Section of the Secret Service.
Attempts to reach both of them were unsuccessful.
A third agent resigned in the wake of the scandal, CBS News first reported Wednesday. At least eight other Secret Service employees remain under investigation and further resignations are expected. Ten defense personnel are also under investigation for alleged involvement.
The raucous party occurred just over one week ago. The government employees are believed to have spent the evening drinking, going to a strip club, and picking up prostitutes at multiple locations. The women had to check in at the hotel where the agents were staying and provide identification.
U.S. government investigators are now on the ground in Cartagena trying to piece together what happened last Wednesday night. Investigators have the names of all the women involved and none are believed to be underage. The youngest woman was 20 years old.
According a congressional staffer, one agent involved in an altercation with a prostitute over payment did not realize there was payment involved or that the woman was a prostitute. Some of the agents, however, knew that the women were prostitutes, had sex with them and paid for the sex.
One woman, an escort, spoke out to The New York Times about the incident.
Times reporter William Neuman told CBS News, "In the morning, she tries to collect the money and says he must pay her $800, and he says, apparently, 'No way.' And they argue, he gets angry, calls her a name, and kicks her out."
CBS News has also learned that all agents accused of wrongdoing are undergoing drug testing, but there is no evidence of drug use and that polygraphs have been conducted on agents involved all week.
As Secret Service officials continued to brief lawmakers, there was widespread outrage on Capitol Hill Thursday.
Former House Speaker Nancy Pelosi called the conduct "disgusting" and said it's time for the Secret Service to clean house.
"I don't see how those who are involved in this should be able to continue in their work," she said.
United States Secret Service Director Mark Sullivan has told members of Congress that he expects more resignations from agents involved in the Colombian prostitution scandal by the end of the week, according to a congressional staffer with knowledge of the investigation.
The Secret Service is being careful not to stay that such behavior has never happened before, but officials have told congressional investigators that a similar incident has never been reported to the Office of Personal Responsibility.