The United Nations European headquarters were on alert on Wednesday after receiving a "credible security threat," a statement said. The statement gave no details, but it said the threat was received on Monday night. It added it did not know how long the alert would last. U.N. Secretary-General Kofi Annan, who is normally based in New York, was in Geneva on Monday but he left for Portugal on Tuesday, Reuters reported. Journalists and U.N. staff noted no sign of unusual activity in the Palais des Nations -- the U.N. building in Geneva -- on Wednesday apart from the usual checking of cars and passes at the entrance to the complex.
