Gunfire erupted at Fort Stewart in Georgia on Wednesday morning, prompting the base commander to lock down facilities in the wake of this “active shooter” incident.

Parts of the Fort Stewart in southeast Georgia were locked down Wednesday after an active shooter was reported on the sprawling Army post, a spokesperson said. Fort Stewart said in a Facebook post that “casualties have been reported and the situation is ongoing.” It’s unclear whether casualties include injuries, deaths or both.

The conditions of the soldiers and the circumstances of the shooting weren’t immediately clear, nor was the identity of the shooter.