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A teenager accused of stabbing five classmates in an Orem high school locker room last week, wore red that day "because he expected there would be a lot of blood," according to charges filed Tuesday in 4th District Juvenile Court.

The 16-year-old boy was charged with five counts of first-degree felony attempted murder, and one count each of class A misdemeanor failure to stop at the command of a law officer and possession of a dangerous weapon with intent to assault.

Charging documents state that on Nov. 15, the teen came to Mountain View High School "prepared to ... murder people."

The teen brought a martial arts weapon called a bo staff, as well as "knives and other tools to inflict physical violence against others," charges state.

Shortly before 7:45 a.m., the teen — wearing a red shirt and glasses — entered the men's locker room, where he approached a student from behind and smashed him on the head with the bo staff, which caused the staff to break, charges state.

The first victim, described in court documents as V1 and his initials, suffered a significant laceration and lost consciousness, but was later able to run from the locker room as the rampage continued.

The teen then approached a second boy and stabbed him in the left side of the neck, causing "a deep wound" that severed a main vein, charges state. The victim also was wounded on the hand when he grabbed the serrated edge of the knife wielded by the attacker, charges state. The victim on Tuesday remained in an intensive care unit of a hospital in serious but stable condition, charges state.

A third boy was stabbed on the right side of his back, neck and shoulder area, with the blade hitting his esophagus and cutting a central nerve which has resulted in disabled elbow and shoulder movement, chargers state.

That boy described being stabbed again and again after he fell to the floor.

"V3 then attempted to lay dead as a method of survival," charges state.

A fourth boy, who saw another victim "down and bleeding all over the place," was not sure what was going on, then saw the 16-year-old approach and stab him, resulting in a deep neck puncture, charges state.

A fifth boy, V5, was walking toward a wounded boy to give help, when the 16-year-old "called V5 by name and then stabbed him in the neck. V5 ran out of the west side of the locker room and hid until he could be helped and treated with stitches," charges state.

The 16-year-old attempted to go after another person who slammed a door to keep him out," charges state. The teen then approached another person in a threatening manner, but went into a restroom area without harming them.

Eventually, a school resource officer cornered the teen in the restroom area and deployed a Taser. After being hit by the Taser, the teen stabbed himself in his own neck with a knife and was subsequently arrested, charges state.

After being arrested, the teen told police he had planned the "violent rampage the day before and had prepared for it by bringing instruments of violence to school with him," charges state.

"He stated that he wore red because he expected there would be a lot of blood," charges state. "He said he picked sturdy steak-style knives because they were less likely to break. He clarified that it was his intent to kill people (describing going for the neck/jugular area when attacking) and that he wanted to feel what that was like prior to dying himself, and remarked that he was surprised he was able to try and kill more people than he expected to be able to."

The teen, who left behind a suicide note at his house, "also spoke freely about what he felt, thought, and observed when he hit and stabbed others intending to kill them and how that compared to what he thought it would be like, including describing the ease of forcing the knife in, some small areas of blood and some large areas of spurting blood, and how it looked to see someone go down dying or going unconscious," charges state.

"The Defendant made it very clear that he did not target anyone for any reason, and merely went after who was available with the goal of creating as many victims as possible," charges state.

The Tribune generally does not identify juveniles charged with crimes unless they have been certified to stand trial in adult court.

School officials have said the teen is a straight-A student with no record of disciplinary action.

Court officials said Tuesday that the teen has had no previous referrals to juvenile court.

A detention hearing for the teen is set for Wednesday morning.