The victims were taken to a hospital, said the State Police, which did not provide further details on them.
IN police sergeant John Perrine has confirmed media reports saying that a suspected shooter has been arrested, but least two victims have been hospitalized.
Anderson Police Department Assistant Chief Mark Cole said one local dispatcher was on the phone with a student during the shooting.
Lockdowns placed on both the middle and high schools have since been lifted and parents have been cleared to pick up their children.
Mellinger said that evaluating school safety plans in Madison County is an ever-evolving process and all the more important while school shootings are prevalent. "It's very sad that we have to go through this in our handsome city", Noblesville Mayor John Ditslear said.
They're also reporting that two people have been transported to a local hospital. The school was evacuated and secured, and the FBI and Bureau of Alcohol, Tobacco, Firearms and Explosives were taking part in the investigation.
Noblesville West Middle School is located about 27 miles north of Indianapolis.
TV helicopter footage shows students being led out of the school and onto buses. Another student is being treated for an ankle fracture. "We have no reason to believe there is any kind of a threat connected to this incident anywhere else", Jowitt said. The middle school has about 1,300 students in grades 6-8.
Investigators believe the student acted alone, though he didn't release the boy's name or the names of the two victims, who were taken to hospitals in Indianapolis.
"If it weren't for him, more of us would have been injured for sure", said seventh-grader Ethan Stonebraker, according to the Associated Press.
The man, who described the shooting as "chaos" for his family, said the boy texted his mother, "come get me".
The latest school shooting happened just a week after 10 people were killed will at Santa Fe High School outside of Houston, Texas.
Jennifer Morris, who was among the anxious parents who rushed to get their kids, appeared slightly dazed and said she was at work when her 14-year-old son sent a text message about the shooting, stunning her. She said no information was available on their condition.
CORRECTION: An earlier version of this story stated the school is northwest of Indianapolis. Jennifer McCormick is in contact with the Indiana Department of Homeland Security and is actively monitoring the situation.
That's when Seaman bravely tackled the shooter and swatted the gun away from him, possibly saving others from getting injured.