The US Embassy in Saudi Arabia warned American citizens Wednesday to beware of possible extremist attacks against Westerners in the country.
The warning said the timing and method of the potential attacks were not known.
"... We have received credible information that an unidentified extremist(s) in Saudi Arabia may be planning to attack Westerners working and living in Al-Qasim, Saudi Arabia," the US warning said. Al-Qasim is an ultraconservative province northwest of the capital Riyadh.
The Embassy urged US citizens to "exercise prudence and enhanced security awareness at all times."