The U.S. embassy in Saudi Arabia said Wednesday it believed the murder of a Briton in the kingdom last week was a “terrorist” act and urged American citizens to be take the necessary security precautions. “Based on preliminary results of the ongoing investigation into this tragic event, we believe that it was a terrorist act directed at a Westerner who was randomly selected as a target opportunity,” an embassy advisory said. “We believe the individual currently under arrest for the murder of the British national has associations with known terrorist elements,” it added. A Saudi national has been detained on charges of shooting dead the British defense contractor in the capital Riyadh last Thursday, and security sources said the Yemeni-born man could possibly be linked to Osama bin Laden’s al Qaeda network. Richard Dent, 37, worked for defense firm BAE Systems and is the fifth Westerner to be killed in the kingdom since 2000. Full Story