MINNESOTA –Vandals defaced a sign promoting the University of Minnesota’s Muslim Students Association, scrawling “ISIS” over a hand-painted mural on the Washington Avenue Bridge, which connects the east and west banks of the Twin Cities campus.

The graffiti was discovered early Thursday morning and documented on social media, prompting the Minnesota chapter of the Council on American-Islamic Relations (CAIR) to call for a hate crime investigation.

Jaylani Hussein, CAIR’s executive director, said the vandalism is among a number of recent actions targeting Minnesota Muslims.

“University administrators and state religious and political leaders must speak out forcefully against the rising anti-Muslim hate in our society that results in such disturbing incidents,” he said.

The Muslim Student Association demanded swift action from the university, condemning the crime and “all bigoted rhetoric affecting Muslims and other minority students.”

University of Minnesota President Eric Kaler’s office released a statement Thursday afternoon calling the graffiti an abhorrent action “that will not be tolerated on our campus.”

The incident marks the latest in a string of Vandalism on campuses across the U.S. targeting Muslims.