A notice sent by the Capitol Police Department to top elected officials said that while there was ''no intelligence regarding a specific threat'' to the Capitol.
Though Congress was in recess, lawmakers were quick to condemn the London attacks.
Traveling in Africa, Senate Majority Leader Bill Frist, R-Tenn., denounced them as ''cowardly acts against innocent people.''
''The United States cannot be intimidated and our efforts will not be deterred,'' Frist said in a statement. ''We stand by the British people in their hour of need as they have done for us. My sympathies go out to the people of London.''
Senate Democratic leader Harry Reid of Nevada, said he and other leaders ''stand in complete solidarity with Prime Minister Blair and President Bush, and all the leaders of the G-8 Summit, who pledged their commitment and resolve to fight and defeat this kind of extremism and hatred wherever it exists in the world.''
British Airways canceled all of its short-haul flights to and from Heathrow through Thursday afternoon.
Heathrow was closed to most flights from Europe, and British Airways canceled all its flights Thursday between the airport and points in Britain, Europe and Libya.
"Cooperation in this particular case was spread over a period of time. There were some arrests in Pakistan which were coordinated with arrests in the U.K."
Homeland Security Secretary Michael Chertoff said officials cannot assume that the terror operation in Britain had been completely thwarted. Homeland Security Secretary Michael Chertoff said...