HERE WE GO AGAIN. Threat prompts NIU to tighten security.

Northern Illinois University is boosting security this week after threatening graffiti was found.

School officials said the graffiti was found Monday, but university police concluded the threats don't warrant suspending classes. In an e-mail to students, the school urged students and faculty to "remain calm but vigilant and to report any information they might have about this threat to the campus police."

In a statement, the school said it would not release details because "excessive media coverage of campus threats clearly contributes to their proliferation."

Just as we're getting our composure back, and the weather is getting better.