The FBI has issued a warning to all law enforcement agencies and the American public that a Yemeni man and several of his associates may be plotting a terrorist attack on US targets as early as Tuesday. Alerting about the possibility of an attack, the Federal Bureau of Investigation on Monday night said that the warning was based on information obtained in Afghanistan and from detainees at the us navy base in Guantanamo Bay, Cuba, where several al-Qaeda and Taliban soldiers are being held. As a result of US military operations in Afghanistan and ongoing interviews of detainees in Guantanamo Bay, Cuba, information has been available regarding threats to US interests, the FBI said. Recent information indicates a planned attack may occur in the United States or against US interests in the country of Yemen on or around Feb. 12, 2002. One or more operatives may be involved in the attack, said the alert. Bureau Report