No evidence of US-based threat, Chertoff says

Investigators have uncovered no signs of US-based terrorists linked to a plot to blow up airliners headed to the United States, Homeland Security Secretary Michael Chertoff said Friday.

"Currently, we do not have evidence that there was, as part of this plot, any plan to initiate activity inside the United States or that the plotting was done in the United States," Chertoff said, a day after British authorities announced the arrests of two dozen suspects. (AP)