Palestinian protesters at Columbia University were occupying a building on the New York City campus on Tuesday as officials limited access to students who live there and essential employees.The protesters who were occupying Hamilton Hall displayed banners from a window reading "Intifada,

Hamas war and its mounting death toll, and the number of arrests at campuses in the US is approaching 1,000 as the final days of class wrap up.

Columbia University's president said on Monday that talks with pro-Palestinian protesters who began camping on the Ivy League campus two weeks ago had failed, and urged them to voluntarily disperse, without saying what would happen if they did not.

Columbia University on Monday began suspending pro-Palestinian student activists who refused to dismantle a protest camp on the New York City campus after the Ivy League school declared a stalemate in talks seeking to end the polarizing demonstration.

Pro-Palestinian protests at U.S. universities showed no sign of slowing as they spread coast-to-coast over the weekend and police crackdowns and arrests continued into another week while students vowed to stay in tent encampments until their demands are met.

Protesters barricaded themselves inside an academic building on campus overnight, upping the stakes in their conflict with the school.