Vincenzo Lirosi disappeared after a night of drinking, police said, and was last seen early Saturday after leaving a party where he reportedly got into a fight.
A Florida Institute of Technology student who was reportedly wielding a knife at students on campus was fatally shot by officers Friday night, authorities said.
The closure happened after the director of information technology noticed suspicious activity last Tuesday and shut down the school's computer network on Wednesday.
Columbia University announced a settlement Wednesday with 79 women who say their former gynecologist, Robert Hadden, abused them while he was their doctor.