UPDATED, 7 p.m.
An e-mailed bomb threat forced Brandeis University to evacuate the campus today, on the eve of most students returning to campus.
The bomb threat came just a day after the Waltham Public Library on Main Street was also shut by a bomb threat.
In both cases, no actual bombs were found after extensive searches. And in both cases, the threats came in early in the morning.
Students already on campus at Brandeis were at first evacuated to college athletic fields; they were later moved to "a safe indoor location" where they were given food and drinks.
Campus police went door to door to evacuate anybody left behind and then to check buildings for bombs.
At 4:50 p.m., the university announced the all clear.
In a message to students and staff, Brandeis President Ron Liebowitz wrote:
Now that the “all-clear” has been sounded, residence halls have been reopened and we will resume full campus operations tomorrow. Orientation for new students and returning student programs will continue as planned. An active investigation is underway, and police will continue to be visible on campus.