Police have not yet publicly identified the alleged shooter, but said the suspect has been taken into custody.
UPDATE: 10:11 a.m. EDT- Indiana State Police Public Information Officer Sgt. John Perrine confirmed two victims were en route to a nearby hospital after an active shooter situation at Noblesville Middle School.
The AP reported that students were being taken to the high school to be picked up by their parents, and the shooter is believed to have acted alone.
Noblesville, a town of 60,000, is about 25 miles northeast of Indianapolis.
Authorities were planning a second news conference at 2 p.m. near Noblesville West Middle School. She described him as a student, and that he shot at someone in the room, and one student was injured. Middle school and high school students at the high school were being released to their parents shortly before noon, according to local news reports.
It is not believed to be related to the shooting, Jowitt said.
Chief of Noblesville Police Kevin Jowett said a "male student" was arrested.
The teacher's actions potentially saved the remaining students from being shot, the seventh grader said. We understand at least one student and an adult may be injured, and we are praying for the best.
Investigators say the scene has been cleared and investigators were continuing to process the crime scene, which was limited to one classroom. He also said that officials would be reviewing video from the school.More news: Codility Data Privacy Standards Exceed General Data Protection Regulation (GDPR) Compliance Levels
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The families of the victims have been notified. One teacher and one student were initially reported injured. "I got a "Mom, I'm scared" text message and other than that, it was 'Come get me at the high school'". Indiana State Police Cpt.
He that a school resource officer assigned to the campus was inside the building and responded.
Higgins told WTHR-TV that her son was shaken up but that he knew little of what happened.
"We don't know what happened in the classroom so I can't make any comments but we do know what happened in that classroom resolved very quickly", Jowitt said.
"Our thoughts are with all those affected by this terrible situation", Holcomb tweeted.
Noblesville is home to about 50,000 people. Arrangements for students returning to school in the coming days were still in process, Barnes and Niedermeyer said.
Jason Seaman, who has been a science teacher for Noblesville schools for almost four years and a seventh-grade football coach for two years, was the teacher shot, according to multiple parents.
The Noblesville West Middle School shooting comes after a spate of school shootings in America, most recently in Santa Fe, Texas, where a 17-year-old student is accused of opening fire and killing multiple students.