(CNN) -- U.S. officials say that al Qaeda in the Arabian Peninsula, a fairly new arm of the umbrella terrorist organization, is behind an apparent plot to send explosive devices to U.S. destinations via cargo planes.
"Al Qaeda in the Arabian Peninsula has been open in its venom toward the United States," John Brennan, a senior U.S. counterterrorism official and an assistant to President Barack Obama, said Friday. "Not only are they intending to do certain things ... they will in fact take steps to carry out those intentions".
Brennan specifically pointed to the botched attempt last Christmas to blow up a Northwest Airlines passenger jet en route from Amsterdam, Netherlands, to Detroit, Michigan, on Christmas Day. U.S. and Yemeni officials have linked the attempt by man who tried to ignite explosives in his underwear to al Qaeda in the Arabian Peninsula.
Formed in 2009, al Qaeda in the Arabian Peninsula is a regional terrorist group known for targeting government and Western interests in Yemen and Saudi Arabia. Yemeni forces, with support from their U.S. allies, have stepped up military and political pressure on the group in recent weeks, despite continued threats from its leader.
CNN