At the University of Minnesota, police moved in during early-morning hours at the request of the institution, arrested nine people and cleared tents in a grassy expanse in front of the main library. That followed the arrest of 120 protesters at New York University on Monday night, according to the New York Police Department.

The developments at those two schools mirrored scenes at Columbia University on Thursday and Yale University on Monday. On the West Coast, California State Polytechnic University at Humboldt went into a lockdown after student protesters barricaded themselves inside a building.