The Madison police officer who killed Corey Ruiz, 38, in July has been identified by the Wisconsin Department of Justice (DOJ) as Keil Baitinger-Peterson. In a DOJ statement released Monday, Baitinger-Peterson is described as an officer with nearly 11 years of experience. The DOJ update reiterates statements made by Madison Police Chief John Patterson that Ruiz was carrying a knife — which was recovered from the scene — and injured Baitinger-Peterson before the officer fired. The DOJ statement also mentions that one other officer was injured, but it does not describe the nature of the injury. Bystander video shows an officer on the scene attempting medical aid immediately after the shooting, then ceasing.