Months before authorities say Nikolas Cruz walked into his former high school and slaughtered 17 people, the troubled teen began showing what may have been warning signs he was bent on violence.
"Im going to be a professional school shooter," a YouTube user with the screen name "Nikolas Cruz" posted in September.
The 19-year-old had gotten expelled last year from Marjory Stoneman Douglas High School for undisclosed disciplinary reasons. A former Junior ROTC cadet, he bought a military-style AR-15 rifle.
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Students and neighbors, meanwhile, reported that Cruz threatened and harassed others, talked about killing animals, posed with guns in disturbing photos on social media, and bragged about target practice in his backyard with a pellet gun.
In fact, schoolmates weren't surprised when Cruz was identified as the gunman in Wednesday's rampage, said 17-year-old Dakota Mutchler.
"I think everyone had in their minds if anybody was going to do it, it was going to be him," Mutchler said.
Benjamin Bennight, a Mississippi bail bondsman, was concerned enough after seeing the "professional school shooter" comment on his Youtube channel that he took a screenshot of it on his phone and called the FBI. Two FBI agents visited Bennight the next day.
The FBI said it never spoke to the Florida teen.
"No other information was included in the comment which would indicate a particular time, location or the true identity of the person who posted the comment," said Brett Carr, a spokesman for the FBI office in Jackson, Mississippi. "The FBI conducted database reviews and other checks but was unable to further identify the person who posted the comment."
Math teacher Jim Gard told The Miami Herald that before the shooting rampage, Cruz may have been identified as a potential threat. Gard said he believes the school had sent out an email warning teachers that Cruz shouldn't be allowed on campus with a backpack.
"There were problems with him last year threatening students, and I guess he was asked to leave campus," Gard told the newspaper.
Student Victoria Olvera, 17, said that Cruz had been abusive to his ex-girlfriend and that his expulsion was over a fight with her new boyfriend. Cruz had been attending another school in Broward County since the expulsion, school officials said.
Jonathan Guimaraes, 17, told the Herald that he had been in JROTC with Cruz. "He was quiet, nice," Guimaraes said. "That's how he was able to blend in. He was wearing his JROTC uniform."
Cruz had on a maroon polo shirt bearing an ROTC insignia and the school's eagle mascot when he was arrested.
A white nationalist appears to have lied to The Associated Press and other news organizations when he claimed that Florida school-shooting suspect Nikolas Cruz was a member of his obscure group.
Law enforcement officials have said they didn't have any evidence to support the claim that Republic of Florida leader Jordan Jereb made in interviews with several news organizations.
The Leon County Sheriff's Office in Tallahassee, where the Republic of Florida is based, said it monitors the group's membership and has seen no ties between the organization and Cruz. Sheriff's spokesman Lt. Grady Jordan said the Republic of Florida has never had more than 10 members.
Broward County Sheriff Scott Israel said he is looking into the white nationalist ties but it is officially not confirmed.
Israel also said Cruz is a registered student with the Broward County Public Schools but didn't give further details. Cruz worked as an associate at a Dollar Tree or a Family Dollar store in Parkland, a spokesperson with the company confirmed Thursday.
Cruz was an orphan — his mother, Lynda Cruz, died of pneumonia Nov. 1, and her husband died of a heart attack years ago, neighbors, friends and family members told the Sun Sentinel. The couple had adopted Nikolas and his biological brother.
Around Thanksgiving, Nikolas Cruz moved in with a friend's family in Broward County.
According to lawyer Jim Lewis, who represents but did not identify the family, they knew that Cruz owned the AR-15 but made him keep it locked up in a cabinet and never saw him go to a shooting range with it. He did have the key, however.
Cruz passed a background check and legally purchased the assault weapon from a licensed dealer in February 2017, a law enforcement official not authorized to discuss the investigation told the AP on condition of anonymity.
The family is devastated and shocked, Lewis said. During the three months Cruz lived there, he was respectful and quiet but also sad over his mother's death, the lawyer told the AP.
"No indication that anything severe like this was wrong," Lewis said. "Just a mildly troubled kid who'd lost his mom. ... He totally kept this from everybody."
Cruz's attorney, Melisa McNeill, said after a court hearing Thursday on the murder charges against the young man that Cruz was sad and remorseful and "just a broken human being."
"When you don't have the support system, that affects who you are, and that affects the people around you," McNeill said. "And when your brain is not fully developed you don't know how to deal with these things."
Cruz was getting treatment at a mental health clinic for a while but hadn't been there for more than a year, Broward County Mayor Beam Furr told CNN.
President Donald Trump said on Twitter Thursday that there were “So many signs that the Florida shooter was mentally disturbed,” and urged people to “always report such instances to authorities, again and again!”
Last year, Trump signed a bill that rolled back an Obama-era regulation that would have added people deemed unfit to handle their own financial affairs to the national check background database, along with people receiving Social Security checks for mental illness, NBC News reported.
It isn’t clear to what extent Cruz was deemed mentally ill, if at all. Asked if Cruz was definitely mentally ill, Israel said Thursday that “it’s a pretty good assumption to start out with.”