Students barricaded doors with tables during high school shooting that left 3 dead, 8 injured

(CNN) -- The terror at Michigan's Oxford High School began with sounds of gunfire, yelling and an urgent message on the loudspeaker.

Then frightened students barricaded doors, phoned for help and picked up anything they could grab in case they needed to fight back.

Senior Aiden Page was in a classroom when he heard two gunshots Tuesday afternoon -- part of a rampage in which authorities say a sophomore killed three students and injured eight other people.

Just like in the active shooter drills they'd practiced, Page watched his teacher run in and lock the door, then students shoved desks against it, he told CNN's Anderson Cooper.

"We grabbed calculators, we grabbed scissors just in case the shooter got in and we had to attack them," he said, describing how a bullet pierced one of the desks they'd used to block the door.

In a sign language class, freshman Mark Kluska heard someone announce a lockdown over the school's loudspeakers. His teacher shut the door and fixed it with a metal doorstop.

"I started realizing it was real when I began to hear yelling," Kluska told CNN.

Later, someone outside the room who claimed to be with the sheriff's office told Kluska and his classmates that all was safe and they could come out, a video the freshman recorded shows.

"We're not willing to take that risk right now," the teacher replies.

It's not clear who the person at the door was. But the teacher quickly signaled students to scramble out a first-floor window into the snow, Kluska said. From there, they raced to safety.

More than 100 calls to 911 were made. About two to three minutes after officers arrived, they found a suspect -- a 15-year-old sophomore -- and took him into custody without incident, Oakland County Sheriff Michael Bouchard said.

Three students were killed in the attack at the school some 40 miles north of downtown Detroit -- Madisyn Baldwin, 17; Tate Myre, 16; and Hana St. Juliana, 14, authorities said. Myre died in a patrol car while a deputy was taking him to a hospital, Bouchard said.

Eight others -- seven students and a teacher -- were shot, Bouchard said Tuesday night. Three were in critical condition with gunshot wounds, including a 14-year-old girl who was on a ventilator following surgery.

A 14-year-old boy was in serious condition with a gunshot wound to the jaw and head, Bouchard said. Three students were listed as stable, and the teacher who was shot had been discharged.

The suspect, who has not been identified by police, was being held at Oakland County Children's Village, a juvenile detention facility. He was placed on suicide watch and was being checked on every 15 minutes, County Executive David Coulter said.

Fast-acting police 'literally saved lives,' sheriff says

The weapon deputies said was used in the shooting, a 9MM Sig Sauer SP2022 semiautomatic pistol, was purchased by the suspect's father on Friday, four days before shots rang out at the school, Bouchard said.

Two 15-round magazines were found at the scene, Bouchard said, noting at least 12 rounds were fired, Bouchard said.

The suspect's parents hired an attorney and instructed the teen not to talk to investigators, Undersheriff Michael G. McCabe said.

Bouchard praised the work of the Oakland County Sheriff's Office and other local law enforcement agencies that responded Tuesday, saying their coordination and active shooter training proved invaluable.

Deputies were dispatched to the school at 12:52 p.m. and the suspect was in custody within three minutes of their arrival, Bouchard said.

As deputies made their way through the school, they encountered the suspect who then put his hands up, Bouchard said. Deputies took the gun and placed the suspect in custody.

The weapon was loaded with seven rounds of ammunition, Bouchard said. "I believe they literally saved lives, having taken down the suspect with a loaded firearm still in the building."

A search warrant was executed at the suspect's home, McCabe said. Authorities seized a phone and are examining other seized items, Bouchard said.

While authorities were not aware of prior concerns, they are investigating pictures of a target and the weapon posted on social media by the suspect, he added.

'I'm going to text my family, say I love them'

As hundreds of law enforcement officers swarmed the campus, students and teachers relied on tactics they'd learned in active shooter drills to protect themselves.

"This district has been very good in training their personnel and their students on active shooters," McCabe, the undersheriff, said Tuesday.

Kluska's teacher, Moises Cortez, jumped into action after a lockdown was announced over the school's loudspeakers, said the student who recorded video of his classmates escaping through a window.

"He shut the door and put like a metal doorstopper so no one would be able to kick in the door." Kluska told CNN. "After he turned off the lights, he told us to get to the corner because this might not be a drill and he wants to be safe."

People were injured as they rushed out of the school, Bouchard said. Most were treated and released at a nearby staging area.

Donna Sanders' youngest grandchild was changing classes when he heard gunshots, she told CNN. He and others ran through an exit door and went to a nearby grocery store to escape, he told her.

"He was able to run to safety with others while his brother was trapped inside," Sanders said.

Sanders' daughter, Vontysha Pittman, said her oldest son sought safety in a classroom with a teacher and other students. He hid under a desk and called his father to tell him what was happening, she said.

"They are both are safe at home, but they are broken. We need prayers and not just for us but all the families at Oxford," Sanders said.

Page's classroom was in lockdown for an hour, the senior told CNN. The entire experience as "insane" as he contemplated whether he would live through the ordeal.

"The very first thing in my head was, 'Is this actually happening? I'm going to text my family, say I love them just in case, if I were to die.' Then when everything calmed down for a second, I was able to catch my breath and rationalize things," he said.

'There are no unwounded students or staff today'

Prosecutors are weighing the evidence and will decide whether to charge the suspect as an adult.

Prosecutor Karen D. McDonald's office has "begun the process of receiving information regarding the investigation" into the shooting. "It is our intent to review it thoroughly and issue appropriate charges quickly," according to its statement Tuesday.

As investigators comb the school for evidence, community leaders vowed to work in coming days to heal the shattered sense of security.

"There are no unwounded students or staff today. Everybody in the Oxford community, Oakland County and frankly, the United States has been impacted by this tragedy, said Coulter, the county executive. "Tragedies like this rip away at our security ... a security and a peace that should be rightfully ours in a place like a school."

"I think this is every parent's worst nightmare," said Gov. Gretchen Whitmer, who added that shootings at schools are "a uniquely American problem that we need to address."

"My heart goes out to the families. This is an unimaginable tragedy," she said. "I hope we can all rise to the occasion and wrap our arms around the families, the affected children and school personnel and this community."

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