Tensions at the James T. Vaughn Correctional Center spilled over into a reported assault on one of the guards.
The Correctional Officers Association of Delaware said that the incident occurred Friday evening when the around 20-to-25 inmates were in the dining hall.
Several broke the rule on to speak during the meal and a guard ordered them to stop.
The Wilmington News Journal reports that the association said at that point other inmates began speaking and the officer was shoved.
A second officer called for backup and the two move to the door with the inmate who allegedly shoved the officer.
Geoff Klopp, president of the Correctional Officers Association, issued a statement noting that there were still 721 vacant positions and noted that this left two officers to be outnumbered 10 to 1 during the incident.