"They have taken measures, including extra security guards, to keep it under better control than last year," Kiely said.
Harvard University Police Department spokesperson Peggy A. McNamara said one officer has already been assigned to Adams House tonight to monitor the party.
Cambridge City police also promised to provide assistance.
"If Harvard police needs our assistance, we will be there," said Frank D. Pasquerello, spokesperson for Cambridge Police Department. "We will provide any help that we can give."
Event organizers said they were confident in the success of tonight's Masquerade.
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"As always, this event is free and open to all members of the Harvard community, space permitting" Brown said.