Woman Attending Reunion at Princeton Sexually Assaulted in Campus Dorm: Report

A woman attending a reunion weekend at Princeton University was sexually assaulted in a campus building Sunday, officials said.

The woman was reportedly attacked by a man she did not know in Spelman Hall at about 2 a.m. Sunday.

The victim told campus police her attacker was a black man who was about 5-foot-8 and 170 pounds, NJ.com reported.

Read: Former Actress Helps Cops Catch Hollywood Acting Coach Accused of Raping Her

He is also said to have facial hair, a mole on his face and was wearing a t-shirt and shorts.

It was not clear if the woman was a student or alumna, according to reports.

Spelman Hall is a residential building that houses mostly “independent” students who "do not participate in eating clubs or eating co-ops.”

The Mercer County Prosecutor’s Office and the University’s Department of Public Safety are investigating the incident.

Read: Teen Allegedly Raped by Student Part of School's 'Senior Salute'

Students have reportedly been advised to remain alert, report suspicious behavior, avoid walking alone and use the buddy system when staying in a building after hours.

Princeton University reportedly expected 25,000 alumni and friends to attend activities over the weekend leading up to commencement ceremony on Tuesday.

Watch: News Anchor Posts Plea to Keep Man Who Raped Her 30 Years Ago Behind Bars