Lyela Sayarath, an eleventh-grader at Georgia High School who sat next to the shooter, describes his strange behavior shortly before he killed four people

An 11th-grader at Apalachee High School who sat next to shooting suspect Colt Gray described the suspected gunman's disturbing behavior immediately before he opened fire and how she and her classmates narrowly escaped death.

Lyela Sayarath said she sat next to the 14-year-old in algebra class Wednesday morning without being warned of the impending tragedy, and described him as a “quiet” teenager. “He never really talked, was away from school most of the time, he just skipped class,” she told CNN. “Even when he talked, he would just respond in monosyllables.” This came as it was revealed that Gray was investigated by the FBI last year for making online threats.

Scary moment before the shooting broke out

Sayarath said she was “not surprised” when Gray was identified as the shooter, adding: “When you think of shooters and their behavior, you usually think of the quiet kid, and he fit that description.”

She explained that on the morning of the shooting, Gray left the classroom just minutes before the shooting began, but when he left, she assumed he was simply skipping class again.

Sayarath reported that Gray left the classroom at 9:45 a.m., about a half-hour before the school shooting alert went off. She assumed he was skipping class because he didn't get a restroom pass from his teacher.

While Gray was gone, teachers were instructed over the loudspeaker to check their email. Sayarath then saw Gray return to her classroom door.

Sayarath said a student, not yet realizing the threat, tried to open the door for Gray, but quickly backed away when he saw his gun. “I guess he realized we weren't going to let him in. And I guess the door to the classroom next door was open, so I think he just started shooting in the classroom,” she said.

She said he then fired several shots “one after the other,” adding: “When we heard that, most people just dropped to the ground and crawled around in one area as if they were stacked on top of each other.”

Sayarath mentioned that her friend, who was in the adjacent classroom, saw someone being shot, which left him deeply disturbed. “He saw someone being shot. He was covered in blood. He was limping a little bit. He looked horrified,” she added.

Police identify victim

This came after 14-year-old Mason Schermerhorn was identified after officials identified the four victims of the shooting as teachers Christina Irimie and Richard Aspinwall and 14-year-old students Mason Schermerhorn and Christian Angulo.

Gray, also 14, injured at least nine other people in the shooting in Winder, Georgia. Barrow County Sheriff Jud Smith said Gray immediately surrendered when police approached him and lay down.

It is still unclear how the 14-year-old got hold of the weapon used in the attack. Officials have not revealed what type of weapon it was either.

According to the Director of the Georgia Bureau of Investigation, after his arrest, Gray will be charged with murder and tried as an adult.

According to police, Gray began shooting at around 10:23 a.m., causing chaos at the school and affecting at least 13 people.