The 216-page transcript of the statement, which his defense attorneys had sought to suppress, was released Monday by the state attorney's office overseeing the case, under a state judge's order.
Cruz made the 12-hour statement to Broward sheriff's Detective John Curcio shortly after the February 14 shooting that killed 17 at Marjory Stoneman Douglas High School and left 17 others injured.
The transcript shows Cruz telling the Detective John Curcio that he started hearing a voice in his head for years, since after his father died.
Cruz described the voice as a male, about his age, and said the only person he ever told about it was his brother.
Cruz told Curcio that he had tried to kill himself twice before the shootings, once by ingesting almost an entire bottle of Advil (which he said he later threw up) and another by drinking vodka and tequila (which purportedly made him pass out).
(Daily Beast) A new report found Parkland school shooter Nikolas Cruz asked school officials for help months before he allegedly gunned down 14 fellow classmates and three adults-but the school district "did not follow through".
"The voice is in here", Cruz said, pointing to his head. Cruz couldn't remember exactly, but he didn't want to do it. Curcio asked why he didn't.
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Cruz said that a couple of weeks before the attack, he had planned to go to a park and shoot people there but then decided he "didn't want to do it".
He told Curcio that he had to fight the voice from taking over, that it was always bad.
"What are the demons?" the detective asked. "It's just regular me trying to be a good person". He said he bought other guns but fired them only twice, both times into the cement floor of his mother's garage. Curcio asked. No, Cruz replied, saying the bullets embedded in the concrete.
The detective allowed Cruz's brother into the interview room and the suspect appeared to awkwardly laugh when he was called a "monster".
"You don't have anything and you're not acting like yourself", said the brother. I know I made it seem like when we were growing up that I hated you. but truth is.
"I don't like the demon", Cruz replied, before ending the interrogation and requesting an attorney.
The Sun-Sentinel on Friday received a consultant's report that was commissioned by the Broward County public school system to investigate the district's handling of accused gunman Nikolas Cruz's long-standing behavioral issues.