EAST LANSING, Mich. — At least three people are dead and five others are injured after a shooting at Michigan State University on Monday night, leading hundreds of police officers to sweep the campus in search of the gunman, who remained at large, police said.

Chris Rozman, interim deputy chief of the campus police department, said authorities received multiple calls of a shooting around 8:18 p.m. at Berkey Hall on the East Lansing campus. Police then immediately responded to a second shooting in “close proximity” to the Michigan State University Union.

“We tended to the victims at both of those scenes, and there was an overwhelming law enforcement response to campus,” Rozman said.

Students were ordered to shelter in place for hours at the East Lansing campus, about 90 miles northwest of Detroit.

Multiple locations on the campus were cleared and secured as of 10:18 p.m., according to university police. The areas included Brody Hall, Snyder/Phillips Hall, Mason Hall, Abbot Hall, Landon Hall, the MSU Union, and Berkey Hall.

The suspect remains at large and was described as a short man with a jean jacket and ball cap, said Rozman. Authorities urged students and staff to continue sheltering in place. 

Rozman said the suspect was last seen leaving the Michigan State University Union building “on foot on the north side of that building.” He urged people to not come to the campus and said all campus activities will be canceled for the next 48 hours.