In a message to the campus community Monday, Massachusetts Institute of Technology President Sally Kornbluth gave students until 2:30 p.m. to leave the encampment on campus.

However, protesters remained in the area until after the deadline. It's unclear if police will move in and make arrests.

"In short, this prolonged use of MIT property as a venue for protest, without permission, especially on an issue with such sharp disagreement, is no longer safely sustainable," Kornbluth said.

The encampment on MIT’s campus, on the Kresge lawn, has been ongoing for more than two weeks, according to Kornbluth.

Police moved in on an encampment at the University of California, San Diego early Monday morning, dismantling it and arresting 64 people, according to authorities.

There were 40 students among those arrested, with officials saying they "have been or will be placed under immediate interim suspension."

All classes were moved to remote learning and nonessential personnel were asked to remain home.

Several dozen protesters were detained on UCLA’s campus Monday morning, according to Los Angeles ABC station KABC.

University officials said all classes would be held remotely Monday “due to ongoing disruptions,” and police would be stationed around campus.

Harvard University students who continue to take part in the pro-Palestinian protest encampment at the school will be “referred for involuntary leave,” the university’s interim president, Alan M. Garber, said Monday.

In a letter to the student body, Garber called on protesters “to end the occupation of Harvard Yard,” arguing that the encampment “favors the voices of a few over the rights of many who have experienced disruption in how they learn and work at a critical time of the semester.”

Students placed on involuntary leave “may not be able to sit for exams, may not continue to reside in Harvard housing, and must cease to be present on campus until reinstated,” he wrote.

“As an academic institution, we do not shy away from hard and important questions,” Garber wrote. “There are many ways for our community to engage constructively in reasoned discussion of complex issues, but initiating these difficult and crucial conversations does not require, or justify, interfering with the educational environment and Harvard’s academic mission.”

-ABC News' Julia Reinstein

Adelmi Ruiz, a reporter for Redding, California, ABC affiliate KRCR, was detained at Cal Poly Humboldt while filming police approaching an encampment of pro-Palestinian protesters.

A livestream showed Ruiz filming police in riot gear approaching protesters, who could be heard chanting, when an officer asks her to come over and tells her they need her out of the way.

An officer then tells Ruiz to put her phone away and put her hands behind her back because he is going to put her in flex cuffs -- plastic handcuffs used by police for protesters. Ruiz identifies herself as a reporter multiple times but is still arrested.

"You had an opportunity to leave. You were told multiple times to leave otherwise you were gonna be arrested," the officer says, according to a livestream which continued after Ruiz placed her phone in her pocket.

She responded that she was on assignment covering the protest.

"Find a different job if this causes you to break the law," the officer says.

As she is escorted away, Ruiz can be heard asking for help.

The Humboldt County sheriff has confirmed Ruiz will not face any charges.