The University of Iowa has issued a Hawk Alert warning students of a man with a knife on campus.
The alert went out to students and staff shortly after 8 p.m. Tuesday.
According to the alert, a man was reported with a knife near the third-floor entrance of Catlett Hall. The alert said an older white man was wearing a blue shirt and khaki pants.
Students were told to take shelter in place until more information was provided.
Catlett Hall is the largest residence hall on the University of Iowa campus.