Corey Johnson was arrested and charged with first-degree murder and attempted murder.
A Florida teen — who had previously been investigated for “alleged violent tendencies” — watched jihadist videos and read the Koran “to give him courage” for stabbing a 13-year-old boy to death and severely injured two others at a birthday sleepover Monday, police said.
Corey Johnson, 17, was charged with first-degree murder and attempted first-degree murder after police said he confessed to the robbery on the 13th birthday sleepover party at a BallenIsles Country Club home, the Palm Beach Post reported.
Jupiter Police, Palm Beach County School District police and the FBI received earlier “gathering information” on Johnson, which prompted an investigation into his alleged violent tendencies,” the Palm Beach Post reported.
“Corey Johnson is there with a knife. He is a murderer. That is all I know.”
Johnson reportedly told the police that he woke up at 4 pm on Monday, Kyle Bancroft home and had an urge to kill Kyle’s mother, Elaine Simon; Kyle’s brother, the 13-year-old Dane Bancroft; and Dane’s friend, 13-year-old Jovanni Sierra. The three victims were each asleep at the time, the Post reported.
“In his statement, Johnson advised he stabbed the victim because of his Islamic faith,” the statement stated.
Johnson and Kyle Bancroft reportedly watched violent jihadist videos of the evening for the 17-year-old carried out the fatal stabbing. Using a knife, he brought it home, Johnson put Sierra multiple times before cutting his throat.
Simon, apparently, to hear Sierra is moaning from the pain, started walking over around 6 p.m. when Johnson allegedly turned on her. Police say he stabbed her at least a dozen times before they fell down the stairs. Dane was stabbed 32 times while attempting to help his mother, according to the Palm Beach Post.
“He is a hero,” the boy’s father said during a telephone interview with the Post. “He saved his mother.”
The Sierra was pronounced dead at the scene. Simon and Dane were brought to the hospital, where Simon remains in good condition Tuesday.
Kyle Bancroft and Johnson were not harmed in the incident.
The police were alerted after Simon ran to a neighbor begging to call 911.
“They rang my bell she’s bleeding,” the neighbor said later. “Corey Johnson is there with a knife. He is a murderer. That is all I know. They try to help the child the children filled with blood.”
Johnson was taken into custody about 8 a.m. after briefly barricading himself in a room.
He later told authorities he was angry with Sierra, who turned 13 on Monday, the so-called celebrities as “gods”, because it went against his Muslim faith. Johnson also said Dane fun of his Islamic faith.
The teenager told the police that he read the Quran before you go to the sleepover “to give him the courage to his intentions,” said a statement.
The Palm Beach County Sheriff’s Office received information before the insert Johnson reached ISIS online and expressed his desire to be a member of the terrorist group.
Law enforcement officials at the time examined Johnson by following his social media accounts and motions, and interviewing his family. The teenager was also investigated for various threats that prompted evacuations at a British school in October 2016.
The authorities had planned to file charges against Johnson for an international school threats a week before the sleepover rampage, according to the report.
Johnson went to William T. Dwyer High School in Palm Beach Gardens, but recently withdrew it, according to the report. Dane Bancroft and Jovanni Sierra attending Watson B. Duncan Middle School.
Katherine Lam is a breaking and trending news digital producer for Fox News. Follow her on Twitter via @bykatherinelam