Newark Police placed hospitals in the region on alert for potential walk-in gunshot victims while they investigated a shots-fired incident in the city's Central Ward.
A ShotSpotter Device alerted police of gunfire in the area of 442 South Jacob Street around 8:38 p.m.
Units arrived at the scene and found shell casings, but no victims were located after officers canvassed the scene.
Police have not announced an arrest in the shooting.