Two congressional leaders are calling for a probe into who leaked information about previously-undisclosed U.S. interrogation centers abroad.
Senate Majority Leader Bill Frist and House Speaker Dennis Hastert want a congressional investigation into who told the news media about those sites.
The Washington Post reported last week on the existence of secret U.S. prisons for terrorism suspects in Eastern Europe. The Bush administration has neither confirmed nor denied that report.
Frist and Hastert said in a statement that the leak, if accurate, could have "damaging and dangerous consequences." They say it could imperil efforts to protect the U.S. from terrorism.
President Bush's spokesman won't say whether Bush endorses the call for a probe. But he says Bush sees the leaking of classified information as a "serious matter."