WATCH! MOMENT MICHAEL BROWN WAS SHOT CAUGHT ON AUDIO RECORDING

Newly released audio allegedly records the moment that Officer Darren Wilson opened fire on unarmed Michael Brown

At least ten shots can be heard - in two separate volleys of gunfire

Experts have said this indicated a 'moment of contemplation' for Wilson

FBI has confirmed it has interviewed the man who recorded audio

Is another tantalizing piece of evidence collected in the ongoing case

Officer Wilson claims he felt his life was threatened on August 9

Witnesses and a friend of Brown, 18, claim he had surrendered

Brown was buried on Monday in a ceremony attended by thousands