A message was sent to the Barnard alumnae community misinforming them that none of the people arrested on the day of the Milstein sit-in were Barnard students. There was, in fact, one confirmed Barnard student who was arrested on her campus. Most of those arrested were confirmed to be Columbia affiliates. We will not list their names here so as to protect them from doxxing and harrasment.

Oddly, President Rosenbury's community message does not at any point condemn the sender of the bomb threat. But she does make sure to repeatedly condemn the unauthorized protest in Milstein. 

She is right that the protesters did not take word of the bomb threat seriously. The bomb threat was relayed by the same administrators who had been trying to get the protesters to leave since their demonstration began early that afternoon. Administrators made "shelter in place" announcements over the PA multiple times since the start of the protest as well as other scare tactics in an attempt to clear them over the course of the afternoon. The bomb threat was not accompanied by any security alarms at first. It was relayed by word of mouth (see video of administrator announcing bomb threat). A fire alarm was later activated, but it was unclear to the protesters whether that was yet another rouse by the administration who had cried wolf so many other times that day. When police arrived on campus, protestors complied with their orders to leave the building and to move onto Futter field where they continued their demonstration. Shortly thereafter, and seemingly without provocation, a number of student protesters were arrested. The police pushed protesters off campus but did not seek to evacuate others (video).

[sources]

https://www.thebarnardbulletin.com/post/inside-the-milbank-sit-in-cuad-protests-student-expulsions-agrees-to-meeting-with-rosenbury-grina

https://www.columbiaspectator.com/news/2025/02/27/barnard-made-no-promise-of-amnesty-did-not-negotiate-concessions-for-sit-in-protesters-spokesperson-writes/