Police said Shen, Lao and a 20-year-old IU student were in the Tulip Tree apartment's parking lot at around 3:30 a.m., Land said. Witnesses told campus police the three were there "to resolve a dispute when the suspects began chasing the victim and wounded him with a knife," Land said.
University police Lt. Craig Munroe told the Indianapolis Star the student was stabbed in the back. The 20-year-old was taken to IU Health hospital in Bloomington with an injury that isn't life-threatening, Land said.
The incident prompted university officials earlier Sunday to tell students to seek shelter behind locked doors. The school gave students the all clear at around 6 a.m.