A school shooter who gunned down four students at a US high school has been identified after being charged with murder and terrorism.

Cops identified 15-year-old Ethan Crumbley as the teen responsible for the massacre of his classmates at Oxford High School in Michigan on Tuesday.

Oakland County Prosecutor Karen McDonald said Crumbley will be charged with four counts of first-degree murder, seven counts of assault with intent to murder, one count of terrorism causing death and 12 firearm possession charges.

McDonald said it is "necessary" to charge Crumbley as an adult to protect the public.

She said: "Charging this person as an adult is necessary to achieve justice and protect the public.

Ethan Crumbley, 15, will be charged as an adult

"Any other option would put all of us at risk of this person because they could be released and still a threat."

Crumbley is said to have attended a parent-teacher meeting just three hours before the killings to discuss his "behaviour".

Other students claim the teen gunman was bullied at the school, which is 40 miles north of Detroit.

But cops say there are no records of Crumbley being picked on.

Prosecutors report that a journal detailing his desires to shoot students was found in his backpack, according to the MailOnline.

Four schoolchildren died after a shooter opened fire for five minutes in the school hallway at Oxford High.

Crumbley pretended the weapon, a gun bought by his dad just days earlier, was his on social media, reports say.

Tate Myre, 16, Hana St. Juliana , 14, and 17-year-old Madisyn Baldwin, died in the shooting.

The death toll rose to four this morning when Justin Shilling, 17, who had been fighting for his life in hospital, sadly passed away.

Another seven students, between the ages of 14 and 17, and a teacher, 47, were also wounded by gunfire.

Of the seven, three students - a 15-year-old boy and two girls, aged 14 and 17, are in critical condition.

Prosecutors say the attack was premeditated

Evidence has been gathered to suggest the massacre was premeditated and not "just an impulsive act".

"I am absolutely sure, after reviewing the evidence, that it isn’t even a close call – it was absolutely premeditated," McDonald said.

"There is a mountain of digital evidence: video tape, social media – all digital evidence possible, and we have reviewed it. Absolutely, we are confident that we can show it was premeditation."

Oakland County Sheriff Michael J Bouchard said: "This kind of thing can happen anywhere and sadly it happened even in a sweet quiet community like Oxford."

The teenage suspect was uninjured and arrested by officers who arrived at the scene within two to three minutes of the first 911 call reporting the shooting.

Tate has been described as a “standout” football player at who died from his wounds on the way to the hospital in the back of a patrol car.

Myre, a talented footballer for the school team, was described by a fellow sportsman as a beloved athlete in the area.

Matt Johnson, 17, told The New York Post : “He was a standout player. He inspired many people and was loved by many people."

Among the tragic victims was talented high school footballer Tate Myre, 16

Matt, who attends a different high school and has played against Myre, said he was in “utter shock” when he learned of the tragedy.

He added: “There’s just no words to describe it. I just can’t believe stuff like this happens and stuff like this is allowed to happen.”

Madisyn's family told ClickOnDetroit she was the oldest of three siblings and had already been accepted to several colleges.

Sheriff Bouchard said during a press briefing that the suspect has lawyer and has refused to speak to police.

He added that the weapon used in the deadly shooting spree was a 9mm Sig Sauer pistol that was bought by the boy’s dad on November 26.

Detectives believed the shooter at least 12 shots and had taken three 15-round magazines with him to school.

He hid the weapon and ammunition in a bag that was later found by the police's dog team and after searching his home officers seized several items, including the boy’s phone.

Read More

Read More