Standoffs between pro-Palestinian student protesters and universities grew increasingly tense on both coasts Wednesday as hundreds encamped at Columbia University faced a deadline from the administration to clear out while dozens remained barricaded inside two buildings on a Northern California college campus.

Both are part of intensifying demonstrations over Israel’s war with Hamas by university students across the country, leading to dozens of arrests on charges of trespassing or disorderly conduct.

Columbia’s President Minouche Shafik in a statement Wednesday set a midnight deadline to reach an agreement with students to clear the encampment, or “we will consider alternative options.”

That deadline passed without news of an agreement. Videos show some protestors taking down their tents while others doubled down in speeches. The heightened tension arrived the night before U.S. House Speaker Mike Johnson’s trip to Columbia to visit with Jewish students and address antisemitism on college campuses.