An FBI notice issued Nov. 15, which warned of a possible upcoming attack by al Qaida, specifically mentioned truck bombs as a possible method of attack, a report from The Associated Press said today.

"Al Qaida's next attack may rely on conventional explosives and low-technology platforms such as truck bombs, commercial or private aircraft, small watercraft, or explosives easily concealed and planted by terrorist operatives," the warning said.

The notice, which AP said was circulated Nov. 14 to law-enforcement officials and revealed to the public Nov. 15, did not specify the timing or location of the possible attack. However, it did say that the target would likely be something of "high symbolic value," in an attack designed to create "mass casualties, severe damage to the U.S. economy and maximum psychological trauma."

AP said the FBI and other agencies were sending information about possible threats to state and local law enforcement agencies as well as to specific industries that could be targeted.

The government did not raise the nation's alert status because of the warning; the notice did not list a specific target or imminent threat, but was intended to raise awareness.

The National Infrastructure Protection Center, in the warning notice, encouraged individuals to report information concerning suspicious activity to their local FBI office or to other appropriate authorities. To find your nearest FBI office through the Web, go to http://www.fbi.gov/contact/fo/fo.htm.

Also, you can reach the NIPC Watch and Warning Unit at (202) 323-3205, tol1 free at (888) 585-9078, or by e-mail at nipc.watch@fbi.gov.