ST. PAUL (AP) — University of St. Thomas officials say they’re investigating after a racist word was traced in dust on a residence hall’s bathroom window.

TommieMedia, the campus news outlet, reports President Julie Sullivan announced by email Thursday that the word had been found Wednesday night in the all-male Ireland Hall.

Residence Life Director Aaron Macke called the word “an act of hate against our black residents and a damaging act against the entire St. Thomas community.”

Campus police are reviewing video, interviewing students and consulting with St. Paul police.

TommieMedia reports it’s the fourth reported racist incident on campus in four years. St. Thomas has about 6,000 undergraduates, most on its St. Paul campus.