All DeVry University and Chamberlain College of Nursing Chicago locations are closed today.

In a statement on each school’s website, a message informs students of a potential security issue involving area campuses including Addison, Chicago and Tinley Park.

Ernest Gibble is with DeVry University. He says he can’t comment beyond the statement issued and reiterated that students should not come to class today.

However, students will still be able to attend clinicals as scheduled at offsite locations.