UCLA's public safety department said in an alert Wednesday night that all on campus classes were "required to pivot to remote" through the end of the week.

The announcement comes after overnight protests turned violent, injuring 15 and sending one person to the hospital, university officials previously confirmed.

Campus operations will be limited on Thursday and Friday, the public safety department said in its evening update.

"We have a large law enforcement presence stationed throughout campus to help promote safety," the department said. "Student Affairs will have essential staff on campus to support our students."

Police at UCLA have announced to the gathered crowd that the encampment on campus is an "unlawful gathering."

Demonstrators have been ordered to leave by the LAPD, according to KABC 7.

UCLA is broadcasting a message of its own, telling protesters to disperse. The message, which appears to be recorded, says those who don't leave will be subject to administrative action.

During a press conference on Wednesday evening, student protestors from Columbia University and City University of New York responded to the intervention of the NYPD to dismantle encampments and suspend and arrest hundreds of protesters across both universities last night and today.

"We will not stop fighting. This is just the beginning," Cameron Jones of Columbia’s Justice for Palestine chapter said.

Corinna Mullin, a member of CUNY faculty, joined the press conference and called the students "brave" and said that the administration actions against its own students was "shameful."

The students from Columbia and CUNY vowed to continue their efforts, saying, "The more they will try to silence us, the louder we will be."

-ABC News' Camilla Alcini

After authorizing NYPD officers to move on the Fordham University to clear an "unlawful encampment" in a campus building on Wednesday, the institution said 15 individuals were arrested for misdemeanor trespassing.

In a statement Wednesday evening, Fordham University said several dozens of people pushed inside the lobby of the Lowenstein building and set up tents.

Most individuals left the encampment after "threats of conduct sanctions" but the remaining 15 people were arrested, according to the statement, which notes, "We believe some of those were Fordham students."

"We met with student leaders as recently as yesterday, readily agreeing to allow them to present their case about divestment and transparency to trustees and our chief investment officer," the university said, adding, "We remain committed to that process."

Columbia University announced Monday it will not hold a campuswide commencement ceremony on May 15 as originally scheduled.

Columbia will focus on the smaller, school-based ceremonies instead based on "input and feedback from student leaders," the school said.

"Our students emphasized that these smaller-scale, school-based celebrations are most meaningful to them and their families," the school said in a statement. "They are eager to cross the stage to applause and family pride and hear from their school’s invited guest speakers."

The smaller school ceremonies will begin on Friday. Columbia said it may hold "a festive event" on May 15 instead. Security concerns were among the reasons the larger ceremony was canceled.

One of the reasons Columbia said it had called in the New York Police Department last Tuesday was in order to make room for the schoolwide ceremony in the same location as the encampment.