The University announced around 4:25 p.m. that it is no longer on lockdown.
Illinois State University's website sent out an emergency alert around 3:30 this afternoon, stating a man with a weapon was last seen near Watterson Towers on campus.
University leaders warned everyone to be alert, do not approach suspect, and seek shelter.
The suspect is a Nathan Thomas, described as a black male, approximately 6 feet 1 inch tall with dreadlocks. He was last seen wearing a white hat, a black coat with red and black stripes on the waist and wrists, and baggy pants.
Our news partner WJBC reports the suspect is a non-student from Chicago visting his girlfriend on campus.
ISU spokesperson Jay Groves says the girlfriend is safe.
There is no report of injuries.
WMBD has a crew on scene, we'll bring you more information as we get it.