Seven people were arrested on Saturday at the University of North Carolina at Chapel Hill as tensions between demonstrators intensified over the toppling this week of the “Silent Sam” statue, which stood for over a century on campus grounds as a symbol of the Confederacy.

University officials had warned students on Friday about the possibility of more protests, writing in a message to students, “We urge you not to attend.” But on Saturday, packs of demonstrators supportive of the monument’s removal clashed with protesters advocating its preservation. Some demonstrators carried signs condemning racism; others had draped themselves in Confederate flags.

Of the arrests made on Saturday, two were connected with charges of assault, destruction of property and inciting a riot, Carly Miller, a spokeswoman for the university, said in a statement.

Three other arrests were in connection with assault, Ms. Miller said. The remaining two arrests were related to destruction of property and resisting an officer.