The United States tonight issued a new worldwide warning to US citizens abroad, alerting them to a "heightened threat" of terrorist attacks, including those using chemical and biological weapons.
In a statement, the State Department said it was issuing the new warning "to remind US citizens of the need to remain vigilant due to a heightened threat of terrorist actions that may target civilians, including the possibility of attacks by non-conventional weapons."
The warning supercedes an earlier alert dating from November that had noted possible attempts to kidnap Americans abroad by terrorist groups, including those affilated with Islamist militant leader Osama bin Laden's al-Qaeda network.
AFP