Kavion Poplous, 18, shot his roommate in Thompson Hall on the Western Illinois University campus around 10:30 p.m. Tuesday, the school said in a news release.
A warrant was issued for his arrest on charges of attempted first-degree murder, aggravated battery and aggravated discharge of a firearm.
Poplous, a freshman at the Macomb, Ill.,-based university, fled after the shooting. The victim, who has not been publicly identified, was taken to a hospital and underwent surgery. His condition was not known, the school said.
“Our thoughts are with our student who remains hospitalized, and we pray for a speedy recovery,” said WIU Interim President Martin Abraham.
As a precaution, the school has locked all buildings and residence halls until further notice and all in-person and online classes Wednesday were canceled.
It was not clear what led to the shooting. University spokeswoman Darcie Shinberger told WIFR-TV that the shooting occurred in a dorm room. Investigators are trying to determine a motive.