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."

The City College of New York said it will hold classes remotely starting on Wednesday until further notice due to "current encampment activities" on the Manhattan campus.

Campus buildings will be closed except to essential personnel, the university said.

The announcement comes nearly a week after the university, which is part of the City University of New York (CUNY) system, said a group of demonstrators calling themselves the "CUNY Gaza Solidarity Encampment" set up a tent encampment on the campus' quad.

"The demonstrators appear to be made up of students, faculty and staff from City College and across the CUNY system and a sizable contingent that is not affiliated with any CUNY campus," City College President Vince Boudreau said in a letter to the community earlier this week, noting that school leaders had begun discussions with representatives from the group.

"We are working to minimize risks to people within the encampment and to protect all members of our campus community, while also minimizing the encampment's impact on campus operations," Boudreau said.