Officials at Columbia University, facing surging tensions on campus that raised safety concerns, have announced all classes will be virtual on Monday as Passover begins.

Columbia President Minouche Shafik said in a statement the decision was made to “deescalate the rancor and give us all a chance to consider next steps.”

The move underscores how tense the situation has become at the Ivy League school and the enormous challenge facing Shafik to get the situation under control.