) -- Two Secret Service supervisors on President
Barack Obama's protective detail are under
investigation for alleged misconduct, a federal law
enforcement source with knowledge of the internal
Secret Service investigation told CNN's John King.
The details were first reported in the Washington Post
Wednesday night.


The investigation began after an incident at the posh
Hay-Adams Hotel near the White House in May. As first
reported by the Post, one Secret Service agent allegedly
removed ammunition from his service weapon and left a
bullet in the room of a female guest, whom he had met
in the hotel bar.


The agent tried to regain entry to the room when he
realized the bullet was left behind, the Post said. Hotel
staff notified the White House after he identified
himself as a Secret Service agent and demanded to be
let in to the room.


No police report was filed and no complaint
was filed with the Secret Service by any of
the parties involved, a government source
told CNN's Joe Johns Thursday.


"The Secret Service takes allegations of
improper behavior seriously and works
diligently to investigate and resolve issues.
Any misconduct is regrettable, but when it is
identified, appropriate action is always taken
based on established rules and regulations,"
Edwin M. Donovan, deputy assistant director
of the Secret Service, said in a statement.


The internal investigation was launched as a
result of inquiries by the Post, the
government source said.
That probe led to a routine search of the
agent's agency-issued BlackBerry, the Post
reported.


The federal law enforcement source
confirmed that the agent, a supervisor, and a
second supervisor were discovered to have
sent sexually suggestive e-mails to a female
Secret Service employee. Nothing explicitly
suggestive has been found, the government
source said.


The first supervisor was removed from his position, the
source said, but the second supervisor remains on the
presidential security detail. The Post reported that the
second supervisor was removed from the security
detail.


While the paper named the two supervisors involved,
CNN is not yet identifying them.
The investigation follows the Secret Service scandal in
April 2012 involving prostitution and drinking before a
presidential trip to Cartagena, Colombia. A review
prompted new rules of conduct for Secret Service
employees in the wake of the incident.


Sen. Ron Johnson said at a Senate hearing Thursday
that despite assurances from Department of Homeland
Security and Secret Service that the 2012 Cartagena
prostitution scandal involving presidential detail agents
was an anomaly, congress has found similar instances in
17 countries.
"Yesterday we learned that two senior level United
States Secret Service agents assigned to the President's
detail were recently disciplined for sexual misconduct.
According to whistle-blowers, one of these men helped
lead the USSS internal investigation of the sexual
misconduct in Cartagena in April of last year. This is
like the fox guarding the hen house," the Wisconsin
Republican said. "This type of behavior jeopardizes the
security of the President of the United States and
makes U.S. government personnel susceptible to
coercion and blackmail."
While not addressing the specifics of the most recent
case, William Hillsburg, acting director of the Public
Affairs Department of the Homeland Security office of
the inspector general, said that in the next couple of
weeks his office is expected to release an inspection
report with an in-depth look at the culture of the U.S.
Secret Service.
The report will look at whether there's something in the
Secret Service culture that led to the behavior in
Cartagena. It will also include recommendations on how
agents are trained.