Barack Obama watches the operation to kill Osama bin Laden; (below) Colin Powell could have been a presidential contender
The well-guarded house where Osama bin Laden's family have been held in Pakistan (AP)
World Trade Center Attacked...NEW YORK - SEPTEMBER 11: Hijacked United Airlines Flight 175 from Boston crashes into the south tower of the World Trade Center and explodes at 9:03 a.m. on September 11, 2001 in New York City. The crash of two airliners hijacked by terrorists loyal to al Qaeda leader Osama bin Laden and subsequent collapse of the twin towers killed some 2,800 people. (Photo by Spencer Platt/Getty Images)...A
Osama bin Laden was shot dead in a raid in 2011
Pakistani youngsters play cricket near the compound of Osama bin Laden which was demolished by authorities in Abbottabad (AP)
Osama bin Laden's house in Abbottabad, Pakistan where he was killed (AP)
A police commando stands guard as authorities use heavy machinery to demolish Osama bin Laden's compound in Abbottabad(AP)
Records about the US Navy Seals' raid on Osama bin Laden's hideout were ordered to be purged from Pentagon computers and sent to the CIA - where they could be more easily shielded from ever being made public.
A draft report by the Pentagon's inspector-general briefly described the secret move, which was directed by the top US special operations commander, Admiral William McRaven.
The transfer did not set off alarms within the Obama administration even though it appears to have sidestepped rules governing federal records and circumvented the Freedom of Information Act.
President Barack Obama has pledged to make his administration the most transparent in US history.
The CIA said the documents were handled in a manner consistent with the fact that the operation was conducted under the CIA's direction.