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Two Students Severely Injured in School Shooting

Police still don't know why a New Mexico seventh-grader allegedly opened fire on a jam-packed gym.
3:00 | 01/15/14

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Transcript for Two Students Severely Injured in School Shooting
To the latest on the school shooting in new mexico. A seventh grader opening fire in a jam-packed gym. Two students severely wounded. Abc's ryan owens is there in roswell, new mexico, this morning for us. Good morning, ryan. Reporter: Good morning to you, robin. This is not even a high school. It's just a middle school and it is the ages of those involved that's so disturbing. Police say the shooter is just 12. This morning he's locked up in a psychiatric hospital. And his two victims, 13 and just 11. We have one student or female possibly shot. Reporter: The gun shots rang out before the morning school bell did. 7:30 a.M. Police say a seventh grader, a 12-year-old, walks into a gym full of 500 students with a sawed off shotgun concealed in a bag or a case. I saw that student walked in with a gun and he just started firing randomly, it seemed. Reporter: Two students are hit and only two. Because authorities say eighth grade social studies teacher john masterson put himself in the line of fire. New mexico's governor spoke with the teacher turned hero. Pointing the firearm at mr. Masterson. Mr. Masterson begins to talk to him to put it down. He dropped the gun. He raised his hands and the principal didn't touch the person that shot, he went to the kid that got shot. Reporter: Authorities say an 11-year-old boy was shot in the face and flown to a texas hospital. 13-year-old kendall sanders was also hit. Tough to see our kids so scared. Reporter: Police searched the suspect's home overnight but still respect sure of the motive. They are investigating reports he warned some students not to come to school. Wing looked at the different social media. I do not have a definitive answer as to whether that happened or not. We'll certainly look into that. Keep these two children in your prayers who were shot while simply sitting in their gym waiting to go to class. Reporter: School will be closed here today as investigators work to answer a number of questions, not the least of which how in the world did a 12-year-old boy end up with a sawed off shotgun? Robin and george. Many want to know the answer to that question. Thank you, ryan, so much. Every single time you see these teachers stepping up. It's incredible. Quick thinking like that. Bless them for it. Josh with other top stories

This transcript has been automatically generated and may not be 100% accurate.

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