"Police are clearing all buildings on campus to ensure safety of students and employees," the message read.
Earlier on Monday, an attacker killed one person at the Mississippi’s university campus. The victim has reportedly been identified as a professor who worked at the university.
"Hundreds of law enforcement from across the state [of Mississippi] are on campus," the university said.
The authorities added that no students have been involved in the incident.
The Delta State University has set a command center to handle the situation, according to university officials. Classes have been cancelled for the remainder of the day.
As of spring 2015, some 3,500 students have been enrolled at Delta State University.