Of the approximately 280 arrests at Columbia University and City College, 170 are summonses, while the remaining people will receive desk appearance tickets or will work through the court system, according to Manhattan District Attorney Alvin Bragg.

Each case would be evaluated individually, including a review of body camera footage and other evidence, Bragg said. But, he did not reveal how many of those arrested were affiliated with the colleges and how many were outside agitators.

-ABC News' Aaron Katersky

Columbia University announced final exams will be held remotely amid a tense campus climate, according to a letter sent out by the university's provost.

"In order to address the concerns of our members in an evolving campus environment, all academic activities for schools on the Morningside Heights campus will be fully remote for the remainder of the semester (with carve-outs noted below). Any remaining class meetings, review sessions, or office hours should be held fully remotely, and all final exams and other final assessments should be fully remote," Columbia said in a statement.

All final exams scheduled for Friday will be automatically rescheduled for May 10.

A total of 34 people were arrested while emptying a pro-Palestinian encampment at University of Wisconsin-Madison Wednesday, the university said.

The majority of those arrested have been released with no citation issued, but four people have been booked, according to the university. The charges they are facing include attempted disarming a police officer, resisting arrest, attempted escape and battery to a police officer.

Four police officers were injured at the University of Wisconsin-Madison where police were dispersing an encampment of protesters on the Library Mall.

Three of the four officers sustained injuries "directly related to the physical resistance," according to the university. A state trooper sustained injuries when a protester allegedly "struck their head with a skateboard."

Columbia University has distributed a letter to members of the encampment on campus telling them to gather their belongings and leave the area by 2 p.m., saying if they identify themselves and sign a form "to abide by all University policies through June 30, 2025, or the date of the conferral of your degree, whichever is earlier, you will be eligible to complete the semester in good standing."

The school said it has "already identified many students in the encampment" and "if you do not identify yourself upon leaving and sign the form now, you will not be eligible to sign and complete the semester in good standing." The school warned it could take action up to suspension or expulsion if they do not leave the encampment.

The school reiterated that negotiations with protesters had broken down and said the protests are a "disruption" to those taking final exams and preparing for graduation.

"As you are probably aware, the dialogue between the University and student leaders of the encampment is, regrettably, at an impasse," the letter states. "The current unauthorized encampment and disruption on Columbia University’s campus is creating an unwelcoming environment for members of our community. External actors have also contributed to this environment, especially around our gates, causing safety concerns – including for our neighbors."