More than 100 people were arrested as police officials cleared a pro-Palestinian encampment overnight Thursday at Emerson College in Boston, according to reports.

Witnesses said the police converged on the tent encampment in Boylston Place Alley around 2 a.m. after making an announcement about an hour earlier informing anyone remaining in the location would be arrested, WCVB reported.

Demonstrators were removed from the alley in about a half hour by police, some of whom were outfitted in protective gear.

The encampment went up Sunday at Emerson, part of a broader support of solidarity taking place at a number of college campuses for protesters arrested at Columbia University in New York City earlier this week.

Boston police said 108 people were arrested. Four officers were injured.

Emerson officials before the arrests, warned protesters that they might be removed from the area by police unless they move out of the area.

"Emerson College remains steadfast in its support of community members' right to peacefully protest," college officials said in a letter on Wednesday, WBUR reported. "However, we must also emphasize that we cannot prevent the enforcement of Boston city ordinances or Massachusetts state law."

The officials said they had been receiving reports of "targeted harassment and intimidation of Jewish supporters of Israel," adding the behavior is "unacceptable on our campus."

The 108 people arrested are expected to be arraigned in Boston Municipal Court.