If you were a college freshmen arriving on campus to begin your fall semester, you might find yourself rooming with someone other than the student originally named in your housing information. Maybe your original roommate requested a transfer to a different dormitory or withdrew from his classes at the last minute. Or maybe that student was arrested on terrorism charges before the semester started.

Okay, so that last scenario is not that likely. But for whoever was slated to room with Mohammad Massan Khalid, 17, at Johns Hopkins this fall, that’s what happened.

Khalid, though a citizen of Pakistan, is a graduate of Mount Hebron High School in Ellicott City and would be right now attending classes at Hopkins on a full scholarship, if he hadn’t been arrested on July 6. He is accused of soliciting donations for a violent, jihadist organization—and even recruiting people to participate in terrorist operations—over the Internet.