Osama bin Laden, the terrorist mastermind killed by U.S. forces in May, had a hit list that included U.S. President Barack Obama and General David Petraeus, Commander of the U.S. and NATO forces in Afghanistan, ABC News reported Friday.

The hit list was discovered in the "treasure trove" of information seized from bin Laden's Pakistan compound after the U. S. raid, the report quoted U.S. officials as saying.

Bin Laden was trying to kill Obama by shooting down Air Force One or Marine One, the president's plane and helicopter, and hoped to kill Petraeus either in a helicopter or fixed wing airplane with a missile or rocket propelled grenade, according to the report.

"It's difficult, but not impossible, to shoot down either General Petraeus or the president's plane," said Brad Garrett, former FBI special agent and now an ABC News consultant. "But the reality is because of the countermeasures and other planes and helicopters in the air, it's not a likely scenario."