Al Qaeda supporters' tape to call for use of WMDs

Intelligence and law enforcement sources tell ABC News they are expecting al Qaeda supporters will post a new video on the Internet in the next 24 hours, calling for what one source said is "jihadists to use biological, chemical and nuclear weapons to attack the West." . . .

Ben Venzke, the CEO of IntelCenter, a group that monitors terrorist communications on the Web, said the video, entitled "Nuclear Jihad, The Ultimate Terror," is a jihadi supporter video compilation and not from an official group.

"Supporter videos are made by fans or supporters who may not have ever had any contact with a real terrorist," Venzke said. "These videos almost always are comprised of old video footage that is edited together to make a new video."