WASHINGTON (AP) - American and European officials say the Obama administration will warn U.S. citizens to be vigilant as they travel in Europe.
The updated guidance is prompted by al-Qaida threats. Senior U.S. officials tell The Associated Press the State Department will issue a "travel alert" for Europe on Sunday morning that advises Americans to stay vigilant on the continent because of threat information.
The officials spoke on condition of anonymity because a final decision has not been announced.
One senior administration official says the travel alert is "a cumulative result of information we have received over an extended period." According to the official, "We are constantly monitoring a range of threat streams and have monitored this and others for some time."