Princeton University has pledged to consider renaming buildings dedicated to former U.S. President Woodrow Wilson in the latest U.S. campus effort to quell student complaints of racism by tweaking names, titles and mascots.

A deal top administrators signed late Thursday with student demonstrators ended a 32-hour sit-in outside Princeton President Christopher Eisgruber's office.

At about the same time, a threat against the university triggered a campus-wide safety alert but Friday was "deemed not credible," school security officials said.