These are troubling times, and this situation is unlike any we have navigated before,” the university president said in a statement.

According to a letter sent by the university to students, faculty and staff, the student was detained at an off-campus residence on Thursday.

A University of Minnesota graduate business student who’s being held by Immigration and Customs Enforcement is suing for his immediate release, saying his arrest violated his rights and he’s been given little explanation for why he’s being held.