Five workers at North Dakota's Youth Correctional Center outside of Mandan were treated at a medical center for undisclosed injuries and released after being assaulted by a number of juveniles over the weekend.

State Corrections Department spokeswoman Michelle Linster tells The Bismarck Tribune that "several" juveniles were involved in the attack at the facility Sunday night. She declined to comment on the nature of the assault.

The incident is still under investigation.