( CNN ) -- The audio recordings of 911 calls from the Sandy Hook Elementary School shooting will be released Wednesday afternoon , after a state attorney dropped his attempt to block the disclosure . State Attorney Stephen Sedensky , whose office conducted an investigation into the shocking mass shooting , said Monday he was withdrawing an appeal of a decision by the Connecticut Freedom of Information Commission to release the calls . Sedensky said he discussed his decision with attorneys for the Connecticut town and lawyers from the office of the chief state 's attorney . The release of the recordings will be administered by the attorneys for the Town of Newtown , Sedensky said through a written statement . Last week , Connecticut Superior Court Judge Eliot Prescott upheld the Connecticut Freedom of Information Commission 's ruling to release calls related to the December 2012 shooting . The Associated Press had challenged authorities ' refusal to release the 911 tapes . The calls are scheduled to be made public at 2 p.m . ET Wednesday . 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 . Sandy Hook killer took motive to his grave . The massacre at Sandy Hook left 26 people dead , including 20 children , making it the second-deadliest shooting in U.S. history . The gunman , Adam Lanza , shot himself at the end of his 11-minute rampage . The killings in Newtown , about 60 miles outside New York , happened less than five months after a similar bloodbath at a movie theater in Aurora , Colorado , outside Denver . Those mass slayings triggered a nationwide debate over gun violence , school safety and mental health , a debate that produced some new restrictions on firearms in several states . A backlash against those laws by gun-rights advocates followed , and there was only limited action on a federal level after a Republican filibuster blocked expanded background checks for gun buyers . CNN 's Yon Pomrenze and Matt Smith contributed to this report .
State attorney drops appeal of court 's decision to release the recordings . CNN had requested the audio files be released . The 2012 shooting left 20 people dead , including 26 children . It 's the second -deadliest shooting in Aurora history .