Chicago Police Superintendent Eddie Johnson says the department is looking at training and tactics after an officer fatally shot an 18-year-old suspect last week.

Johnson said Friday that he applauds release of videos related to the shooting death of Paul O'Neal on July 28. The agency that investigates police misconduct made the videos public Friday morning. Johnson praised the Independent Police Review Authority for being "transparent and open" and said the department would fully cooperate with the investigation.

Autopsy results show O'Neal was shot in the back. Though the videos show officers saying they thought O'Neal fired at them, no gun was ever found.

Johnson has stripped three officers of police powers. He says the department will look at how police agencies elsewhere deal with such situations and promised that his department will be "open and honest" and will work with the community to implement solutions.