FRANKFORT, Ky. (AP) — At least one student was killed and another was critically wounded in a shooting at a residence hall at Kentucky State University on Tuesday, and a suspect who is not a student at the school was in custody, officials said.

The suspect in the shooting that happened around 3 p.m. is not a Kentucky State student, Scott Tracy, assistant chief of police for Frankfort, said during a news conference Tuesday evening. Tracy said police swiftly responded to the shooting.

“Frankfort police believe this to be an isolated incident and there are no active safety concerns on campus at this time,” he said.

Video from WLKY-TV in Louisville showed multiple police vehicles outside a cluster of dormitories and crime scene tape in a courtyard at the school in Frankfort, the state’s capital city. One student who was shot at the residence hall, Whitney M. Young Jr. Hall, is in critical condition but is stable, according to the university.