Police are investigating after a New York college student was killed in an off-campus house during an early morning break-in, casting a pall over the campus and commencement ceremonies.

Police say Hofstra University junior Andrea Rebello was shot and killed early Friday during the home invasion. A masked gunman was also killed. Authorities have described it as a police-involved shooting, but it is unclear who fired the fatal shots or how many rounds were fired.

Rebello was killed during an attempted robbery in the home she shared with her twin sister and several other Hofstra students, who were unharmed.

The university says its weekend commencement ceremonies will continue as scheduled.

The 21-year-old Rebello was a junior and a public relations major at the New York college.