Law enforcement authorities are tracking terrorists with Al Qaeda leanings in the U.S., Homeland security Secretary Janet Napolitano told Bloomberg Television.

"It is fair to say there are individuals in the United States who ascribe to Al Qaeda-type beliefs,” Napolitano told Bloomberg. “And so it makes information-sharing, it makes effective law enforcement and it makes the shared responsibility of law enforcement ever so important."

Napolitano told Bloomberg that since the Sept. 11 attacks, information between local, state and federal law enforcement agencies "much improved.”"

But, she warned that the treat of an attack is "always with us," Bloomberg reported

Napolitano said the combination of some Al Qaeda leaders being killed or caught, and their financing being traced or blocked, it’s prevented the terror group geographically.

She told Bloomberg its kept the main organization contained to northwestern Pakistan, but that they are using other affiliated groups to help plan attacks.

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