WATCH: Shocking moment 12-year-old opens fire on classmates in Mexico college rampage
THIS is the harrowing moment a 12-year-old pupil suffering from depression opened fire on his teacher and fellow students at an American College in Mexico today.
Chilling footage of gunman moments before school shooting
Local media have reported that a pupil was behind the attack and that a teacher and two students were in a serious condition.
Aldo Fasci, security spokesman for the northern state of Nuevo Leon, confirmed the student entered the school with a gun and opened fire - shooting the teacher, another student, and pointing the gun at classmates before shooting himself.
He said the wounded had vital signs but were in extremely serious condition.
Early reports indicate the gunman, thought to be a disgruntled pupil of the American College of Northwest, has been rushed to hospital after being injured in a gun battle with armed cops, who stormed the school following the rampage.
Mr Fasci said: "In the video, you can see the minor take out the gun, shoot the teacher and then another child.
"He is there for a while, pointing at other students, and a few minutes later he opens fire."
He added the motive was still unclear, but attributed it to "the situation that is happening everywhere".
He said: "The children have access to the internet. This has happened in other countries."
In the video, you can see the minor take out the gun, shoot the teacher and then another child.
One 15-year-old student was shot in the arm, and two 14-year-olds were shot and injured.
There were no details on the nationalities of those shot, and there is yet to be an update on their conditions.
Oscar Aboytes, spokesman for emergency services in Nuevo Leon, said all of the wounded were rushed to hospital.
Early reports suggested three people had died in the fire fight, but no deaths have been confirmed as yet.
Television footage showed ambulances and police outside the Colegio Americano del Noreste, south of the industrial city of Monterrey.
While unverified images widely distributed on social media showed three people lying on the floor of a classroom with pools of blood around their heads.
Shootings at schools are thought to be extremely rare in Mexico.
It was unclear how the student got the gun, which is reported to be a .22 caliber pistol, into the school but it is reported he took the gun from home.
The pupil had been suffering from depression before what officials have described as "an unprecedented attack" which was caught on video.
Chaos at scene of Mexico college shooting
Mexico previously enforced a program that checked book bags at school entrances, but ithe practice has slipped in many places over recent years.
Fasci said: ’’There was a reason why book bags were checked. I think we are going to have to start doing it again."
A receptionist at the school said she had no additional information on the shooting.