The officers involved in the shooting, as well as assisting officers on scene, were wearing body cameras, Escalante said. In-car video is also available, he said.



"This is going to be a very active investigation," Escalante said. "It's going to take a while to be able to view after downloading all the body camera footage as well as the in-car camera footage and whatever other video may be found during the canvass."



Extra detectives were called to canvass the neighborhood, he said. Members of the Independent Police Review Authority were also on the scene.



Escalante did not take reporters' questions.



"I also still have quite a few questions as to what exactly happened here, but it is still going to be a little while before we have our answers internally to those questions, as well as IPRA being able to have all of their questions answered as well," he said.



The shooting was the second involving a Chicago police officer in a 40-minute time period on Thursday. Shortly before 7 p.m. in Englewood, police shot a man while responding to a possible robbery. The man was reported in fair to serious condition.