Two people have been shot dead at Central Michigan University in the US, according to the institution.
The university said the shooting had started on the fourth floor of Campbell Hall at around 9.30am on Friday, local time.
On twitter, they confirmed that the two people shot dead were not students, adding that police “believe the situation started from a domestic situation”.
There were no other injuries.
The campus remains on lockdown while the suspect, named by the university as James Eric Davis Jr, is at large.
Officials in Mount Pleasant, where the campus is located, described the suspect as a black 19-year-old, 5ft 9in tall and wearing yellow jeans and a blue hoodie.
They added: “He is considered armed and dangerous.”
The university’s Student Government Association warned those on campus to “please stay inside and lock your doors” while police scour the campus on foot and with helicopters overhead.
Central Michigan University has about 23,000 students in Mount Pleasant, about 70 miles north of Lansing, the state’s capital.
The shooting comes two weeks after 17 people were shot dead at a Florida high school, sparking a renewed debate over gun violence in the US.