Officials say the U.S. embassy in Riyadh and consulates in Jeddah and Dahran will reopen for normal operations Saturday, but a public advisory urges U.S. citizens in Saudi Arabia to maintain a low profile and avoid places where westerners congregate.

The missions closed last Friday because of what was termed credible information that terrorists were preparing to strike, though U.S. officials said the information was not specific enough to prevent the car bomb attack the next day on a housing complex for mainly Arab foreigners in Riyadh.

At a Washington news conference, Saudi spokesman Adel al-Jubeir said his government is closely cooperating with the United States and is determined to crush terrorist factions.

"If the intention of the terrorists, much less, is to destroy the Saudi state, they will not succeed. We will fight them with everything we have until we crush them," he warned.