Columbia University senior Maryam Alwan was visiting family in Jordan over winter break when she received an email from the school accusing her of harassment. Her supposed top offense: writing an op-ed in the student newspaper calling for divestment from Israel.

The probe is part of a flurry of recent cases brought by a new university disciplinary committee — the Office of Institutional Equity — against Columbia students who have expressed criticism of Israel, according to records shared with The Associated Press.

In recent weeks, it has sent notices to dozens of students for activities ranging from sharing social media posts in support of Palestinian people to joining “unauthorized” protests.