Justice Department drops appeal of FBI 's decision to release the tapes . The Associated Press had requested the audio files be released . The 2012 shooting left 26 people dead , including four children . Sedensky 's office issued a 44-page report last week that concluded the shooter was a mentally ill recluse who never gave any indication that he was planning to kill people . It 's the second - deadliest shooting in U.S. history .
Justice Department drops appeal of FBI 's decision to release the tapes . The Associated Press had requested the audio files be released . The 2012 shooting left 26 people dead , including four children . It 's the second - deadliest shooting in U.S. history .