Video shows students sheltered and fleeing Michigan shooting 3:24
Friends, family and an entire Michigan high school mourn the loss of four students after a 15-year-old boy opened fire during the school day, killing four classmates and shooting seven others in the campus.
A suspect is in custody after Tuesday's shooting at Oxford High School in Oxford, Michigan, authorities said.
More than 100 calls were made to 911.
About two to three minutes after officers arrived, they found the 15-year-old and detained him without incident, Oakland County Sheriff Michael Bouchard said.
The students who lost their lives were Tate Myre, 16;
Hana St. Juliana, 14, Madisyn Baldwin, 17 and Justin Shilling, 17, authorities said.
Shilling died Wednesday morning, according to the Oakland County Sheriff's Office.
Here's what we know about some of the victims:
Tate Myre, age 16
It is clear that Tate Myre dedicated himself to his sport.
He was a star soccer player who had earned a place on the varsity team since he was a freshman at Oxford High School, the team said in a tweet.
Not only was he talented in the field, he excelled academically and was an honors student.
"It is with great regret that one of the victims of the tragic event at OHS today was one of us, Tate Myre," the team tweeted Tuesday night.
"Tate was a great young man with a bright future and loved by all. We will miss you, Tate."
Myre's own Twitter account is filled with game highlights and match videos showcasing his skills.
One of his last tweets, on November 28, thanked the football team of the University of Toledo for having him in one of their games.
A police officer had put Myre in his car after the shooting, but he died on the way to the hospital, the sheriff said.
An online petition has surfaced calling for the school's soccer stadium to be renamed Myre.
"Tate is not just a hero to his fellow students at Oxford High School, but a legend, his act of bravery must be remembered forever and passed down from generation to generation, he put his life in danger to try to help the thousands of students from Oxford High School, "the petition reads.
As of Wednesday morning, the petition had collected more than 48,000 signatures.
Madisyn Baldwin, 17
Madisyn Baldwin was expected to graduate this year, her family told CNN affiliate WDIV, and had already been accepted to several colleges, some with full scholarships.
His grandmother, Jennifer Graves Mosqueda, known to Baldwin as "GiGi," announced the loss of the family on Facebook and created a GoFundMe campaign on behalf of Baldwin's mother and father.
"This beautiful, intelligent, sweet and loving girl was tragically taken from us all today, leaving a huge hole in all of our hearts ..." Graves Mosqueda wrote on Facebook.
"This horrible day could never have been imagined or planned."
"My daughter and son-in-law would never ask for anything during this time, however, I want them to be together, with their other children and with the family during this time without worrying about work, bills and arrangements," he wrote on the site campaign website.
Baldwin was an artist who loved to draw, read and write, her family told WDIV.
She was the oldest of three siblings, had a younger half brother and two sisters whom she loved very much, they said.
Hana St. Juliana, age 14
The Oxford High School girls' basketball team shared a tribute Wednesday to 14-year-old school shooting victim Hana St. Juliana.
"We will never forget his good heart, fun personality and passion for the game," the team wrote on Twitter.
"Since sixth grade camp, you've been playing Oxford basketball, soaking up the game."
The team said Tuesday night that it would have been his debut with the team.
"This season we play for you, Hana," the team wrote.
Justin Shilling, 17
Justin Shilling, who died Wednesday morning, according to the Oakland County Sheriff's Office, was described by his employer as a co-captain of the bowling team, a devoted friend and much more.
Anita's Kitchen, where Shilling worked, shared a statement on social media about him.
"We have just learned of the passing of one of our bright young Lake Orion employees, Justin Shilling, in connection with the tragic events that took place yesterday at Oxford High School," he wrote at his workplace.
"Justin was an exemplary employee, a devoted friend and co-worker, co-captain of his bowling team, and simply a pleasure to be around. Our thoughts are with his family and friends at this difficult time."
The family business has three locations in Michigan and they have employed many Oxford High School students.
"Since we opened our doors to Lake Orion in December 2019, much of our staff has been made up of students from Oxford High School," the company wrote.
"We often marvel at how blessed we are to have such amazing kids as part of our Lake Orion team. Simply put, we wouldn't be a restaurant without them. Our hearts ache for all of them today as they begin to heal from this. terrible tragedy ".
Six other students and a teacher injured
Seven others, six students and a teacher, were shot, authorities said.
Among the injured was a 14-year-old girl who was on a ventilator after surgery, Bouchard said Tuesday night.
A 14-year-old boy also had a gunshot wound to the jaw and head, while the teacher who was shot was released.
Senior Aiden Page was in a classroom when he heard two gunshots Tuesday afternoon, part of what authorities called an "absolutely ruthless and murderous" onslaught by a sophomore.
Watch students take shelter and flee through a window during a Michigan school shooting
Similar to the active attacker drills they had practiced, Page saw her teacher rush in and shut the door, then students pushed desks against her, she told CNN's Anderson Cooper.
"We grabbed calculators, we grabbed scissors in case the shooter got in and we had to attack them," he said, describing how a bullet went through one of the desks they had used to block the door.
The attack was the deadliest school shooting in the United States since eight students and two teachers were killed in May 2018 at Santa Fe High School in Texas, according to Education Week.
There have been 28 school shootings this year, 20 since Aug. 1, by his tally.
1 of 15
The United States has a dismal record of mass shootings.
In this gallery we tell you which were the most deadly.
2 of 15
October 1, 2017 - Las Vegas shooting - A 64-year-old man opened fire at a country concert in the area known as The Strip, leaving 58 dead and almost 700 injured (Ethan Miller / Getty Images)
3 of 15
June 12, 2016 - 49 people were killed in Orlando's Pulse bar when 29-year-old Omar Saddiqui Mateen opened fire at the nightclub.
More than 50 were injured.
(Credit: WKMG / CNN).
4 of 15
April 16, 2007 - Virginia Tech Massacre: 32 people were killed in the attack by a 23-year-old student who committed suicide after opening fire on the university campus.
5 of 15
December 14, 2012 - Sandy Hook School Massacre: 20-year-old Adam Lanza shoots and kills dozens of children, killing at least 20 between the ages of six and seven, six adults and then taking his own life.
6 of 15
On November 5, 2017, a man walks into a small Baptist Church in Sutherland Springs, Texas, and shoots 25 people and an unborn baby.
7 of 15
October 16, 1991 - Massacre at Luby's Cafeteria in Killeen, Texas: A 35-year-old man crashed his truck through the door of the Luby's Cafeteria in Killeen, Texas.
23 people died and the attacker committed suicide.
8 of 15
On August 3, 2019, twenty people were killed when a man entered a Walmart in El Paso and began shooting.
22 people died.
9 of 15
On February 14, 2018, an alumnus opens fire at Marjory Stoneman Douglas High School, in Parkland, opens fire.
There were 17 deaths.
(Credit: Joe Raedle / Getty Images)
10 of 15
November 5, 2017 - At least 26 people were killed in a shooting at a Sutherland Springs, Texas Baptist church.
11 of 15
August 3, 2019 - In El Paso, Texas, 22 people were killed in a mass shooting at a Walmart store.
Authorities say they found an anti-immigrant document defending white nationalist and racist views, which they believe was written by suspect Patrick Crusius, 21.
It is investigated as internal terrorism.
12 of 15
July 18, 1984 - San Ysidro, California McDonald's Massacre: A 41-year-old man killed 21 people at a local restaurant.
Police killed the attacker an hour after the shooting began.
13 of 15
February 14, 2018 - Nikolas Cruz, 19, attacked students and teachers at Marjory Stoneman Douglas High School in Parkland, Florida, killing at least 17 adults and children.
14 of 15
August 1, 1966 - Massacre at the University of Texas at Austin: 16 people were killed and at least 30 injured when a former military man opened fire from a university tower.
The police shot him down.
15 of 15
December 2, 2015 - San Bernardino Massacre: A married couple opened fire at an employee meeting at a facility in San Bernardino, killing 14 people.