WASHINGTON (AP) - Three more Secret Service officers resigned Friday in the expanding prostitution scandal that has brought scorching criticism of agents' behavior in Colombia just before President Barack Obama's visit for a summit meeting last week. Agency Director Mark Sullivan came to the White House late Friday to personally brief Obama in the Oval Office.
The Secret Service announced the new resignations, bringing to six the number of agency officers who have lost their jobs so far because of events at their hotel in Cartagena.
An additional agency employee was implicated Friday, a government official said, commenting only on condition of anonymity concerning the continuing investigation. That brings the number to 12. One has been cleared of serious misconduct but still faces administrative action, an official said.
Obama's spokesman has assailed Republican criticism that has attempted to blame a lack of presidential leadership for the scandal and has said Obama would be angry if allegations published so far proved to be true. Friday's was Obama's first personal briefing by Sullivan on the subject, officials said.
Eleven Secret Service employees had been noted earlier. The 12th has been placed on administrative leave.
The scandal also involves at least 11 military members who were working on security before Obama arrived in Cartagena for the Summit of the Americas. The Pentagon acknowledged Friday that the 11th military person, a member of the Army, was implicated.
The incident in Colombia involved at least some Secret Service personnel bringing prostitutes to their hotel rooms.
Two Secret Service supervisors and another employee were forced out of the agency earlier in the week. All of the agents being investigated have had their top-secret clearances revoked.
Meanwhile, the lawyer for two Secret Service supervisors said Obama's safety was never at risk, and he criticized leaks of internal government investigations in the case, signaling a possible strategy for an upcoming legal defense.
The Secret Service briefed about two-dozen congressional staff members Friday, mainly from the Senate Judiciary Committee, according to one individual who was there but was not authorized to be quoted by name.
Those under investigation were offered polygraphs and drug tests. It is unclear whether anyone accepted, the person said.
As for the military personnel involved, Pentagon press secretary George Little said Defense Secretary Leon Panetta was getting regular updates on the investigation.
"He understands the level of interest in this issue," Little said. "He has serious concerns about the alleged misconduct."