6th grade girl allegedly opens fire at school in Idaho, injuring 3

A female middle school student allegedly opened fire on classmates in Rigby, Idaho, shooting three people until a teacher disarmed the girl and held her until police arrived.
1:41 | 05/07/21

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Transcript for 6th grade girl allegedly opens fire at school in Idaho, injuring 3
We turn to another school shooting at a middle school in Idaho. A sixth grade girl opened fire and a hero teacher jumped into action stopping what could have been another mass shooting. That young girl is now in custody. Will Carr has the latest in Rigby, Idaho. Good morning, will. Reporter: Good morning, Cecilia. All the victims were brought to this hospital and all expected to survive thanks to that teacher who sprang to action putting herself in harm's way to save lives. This morning, police are hailing this Idaho teacher as a hero for her role in helping stop a potential mass shooting. Authorities say a sixth grade girl pulled a handgun out of her backpack Thursday and started shooting inside Rigby middle school and moved outside where she continued to fire. We heard one gunshot and then right after we heard another and we heard multiple kids screaming. My friends and I were freaking out and we were hiding in the corner of our classroom. Reporter: Kristen knighting confirming to ABC news she's the one that disarmed the shooter and detained her until police arrived. Three people, two students and a custodian were injured and rushed to the hospital. Like everyone was like hugging their parents. Reporter: The lockdown, teachers switching off light, computers shut down, students lining the walls until they could leave to reunite with their parents. Me and my friends were like all crying and texting our moms and saying that what is going on right now, we were all very scared. Reporter: This morning with the alleged shooter in custody, the motive is unknown. And this morning, everyone here in Idaho falls is sending much love to that heroic teacher.

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

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