"That officer is in a very, very tough place; unimaginable what that officer has to be feeling right now," Chicago Police Supt. Larry Snelling said.

Chicago Police Supt. Larry Snelling on Saturday cautioned against a rush to judgment, after police confirmed Officer Krystal Rivera was accidentally shot and killed by a fellow officer Thursday night during a chase in the Chatham neighborhood.

Chicago police officials say an officer killed this week was accidentally shot and killed by her partner after they encountered someone with a rifle when they chased a suspect into an apartment.