Police at Michigan State announced that all activities on campus, including athletics, have been canceled for the next 48 hours in the wake of a shooting there Monday night.

At least five people were injured after the shooter opened fired shortly after 8:30 p.m., according to university police. Interim Deputy Chief Chris Rozman said several suffered life-threatening injuries.

The suspect remains at large. Police released photographs of him Monday night, describing him as a shorter Black male wearing red shoes, a jean jacket and a navy baseball cap with a light-colored brim.

The first shots were fired at Berkey Hall, a classroom building on the north side of campus. Shots were also fired at the nearby student union, according to police.

Rozman told reporters in East Lansing that the shooter was last seen leaving the student union. He added that police believe there was one shooter, and that reports on social media of other sightings or shootings were not accurate. Rozman said police will provide hourly updates for the foreseeable future.

The Spartans men's and women's basketball teams were off on Monday night, but the men's team was scheduled to host Minnesota on Wednesday at 7 p.m. ET. Also, Michigan State's men's tennis team was scheduled to host Drake on Wednesday at 5 p.m. ET in the only other scheduled home athletic event through Wednesday.

The Spartans women's basketball team is scheduled to play at Purdue on Wednesday night, but it wasn't immediately known how that game will be impacted.

Information from The Associated Press was used in this report.