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(CNN) - Could a newly released audio provide more clues on what led up to Michael Brown's shooting death?
The FBI has questioned a man who says he recorded audio of gunfire at the time Brown was shot by Ferguson, Missouri, police on August 9, the man's attorney told CNN.
In the recording, a quick series of shots can be heard, followed by a pause and then another quick succession of shots.
Forensic audio expert Paul Ginsberg analyzed the recording and said he detected at least 10 gunshots - a cluster of six, followed by four.