Seven people were killed at an evening at the university near Ball State University early Saturday, including three seriously injured as a result of a dispute, police said.
A party animal was transported to an Indianapolis hospital about 80 km from the school campus in Muncie, Indiana.
According to CNN, only one victim, a woman with a bullet, is a Ball State student.
Police arrested 19-year-old VaShaun Harnett of Muncie, and charged him with two counts of attempted murder, according to the Muncie Star Press, citing the police.
We do not know if he was the only gunman.
Ball State star Stella East told the newspaper that she was in the party yard with about 50 other people when they heard five to ten shots fired from inside, where found 50 more people.
Moments later, she heard 30 more shots, with the shooter apparently moving from the inside to the outside, she said.
"Everyone ran opposite to the beginning of the shoot. I just grabbed my friends and ran as far as I could, "East said. "I was trying to stay calm but I knew it was very serious and I just had to escape."
The police chief of Muncie, Joe Winkle, said that the shooting took place after "some kind of confrontation inside the house".
"I think every time you have a DJ and you learn that there is a party, you will attract a lot of different people from all over the city, so I think that's probably what it's gone, "he said.
Vice President Mike Pence, keynote speaker for the Saturday morning speech at Taylor University in Upland, offered "prayers" to the wounded and their families.
"God bless them all," he writes.
Ball State reassured students Saturday: "The campus is safe."