US embassy in Saudi warns Americans of possible attack

"The timing and method of potential attacks are currently unknown," added the message which was dated August 4 and was the first of its kind this year.
The message urged Americans to keep "security and situational awareness levels high," and that they vary their routes and times to and from work, among other things.
Al-Qassim is an ultra-conservative neighbourhood of the Saudi capital, where the security forces have engaged in a series of bloody clashes with extremists including Al-Qaeda.
---------------------------------------------------------------------------