CHICAGO (CBS) -- Police oversight officials on Tuesday released video of a shootout during a traffic stop last month in Humboldt Park that left 26-year-old Dexter Reed dead and a police officer wounded. The Civilian Office of Police Accountability said its initial review of the March 21 shootout in the 3800 block of West Ferdinand Street "appears to confirm that Mr. Reed fired first, striking the officer and four officers returned fire." "Available preliminary evidence also confirms that officers returned fire approximately 96 times over a period of 41 seconds, including after Mr. Reed exited his vehicle and fell to the ground," COPA said in a statement. Mayor Brandon Johnson called the footage of the shootout "deeply disturbing." "I know this footage is extremely painful and traumatic for many of our city's residents," he said. The shootout followed a traffic stop, when five plainclothes CPD tactical unit officers in an unmarked squad car pulled Reed over for not wearing a seatbelt. In body camera footage, officers can be heard telling Reed to roll down his window, and asking him "what are you doing?" After rolling down his window, Reed then starts rolling his window up, prompting officers to repeatedly tell him "don't roll the window up" and "unlock the doors." COPA Chief Administrator Andrea Kersten said Reed did not comply with officers' verbal commands, and officers pointed guns at him as they continued to order him to unlock his car. Less than a minute after officers surrounded Reed's vehicle, the first shots were fired. ----------------------------------------------------------------------------- CBS 2 News Chicago brings you breaking news, weather, compelling exclusive content and award-winning investigative reports from the CBS 2 Investigators. Subscribe to CBS 2 News Chicago on YouTube : null CBS 2 NEWS 24/7 LIVESTREAM: https://www.cbsnews.com/chicago/live/ CBS 2 NEWS ON PLUTO TV: https://pluto.tv/en/live-tv/62cdc75b1a1cbd0007ed45dc?gclid=CjwKCAjw0N6hBhAUEiwAXab-TbSSi4Fh_IPmF_dWkGjJt7KM9K2wzqpWTwK3NUIppzjF5uEMvbt1xhoCfYIQAvD_BwE CBS 2 NEWS WEBSITE: https://www.cbsnews.com/chicago/ FACEBOOK: https://www.facebook.com/cbschicago X (TWITTER): https://twitter.com/CBSchicago GET THE CBS 2 NEWS APP: https://apps.cbslocal.com/chicago/ ----------------------------------------------------------------------------- CBS 2 News Chicago brings you breaking news, weather, compelling exclusive content and award-winning investigative reports from the CBS 2 Investigators. Subscribe to CBS 2 News Chicago on YouTube : null CBS 2 NEWS 24/7 LIVESTREAM: https://www.cbsnews.com/chicago/live/ CBS 2 NEWS ON PLUTO TV: https://pluto.tv/en/live-tv/62cdc75b1a1cbd0007ed45dc?gclid=CjwKCAjw0N6hBhAUEiwAXab-TbSSi4Fh_IPmF_dWkGjJt7KM9K2wzqpWTwK3NUIppzjF5uEMvbt1xhoCfYIQAvD_BwE CBS 2 NEWS WEBSITE: https://www.cbsnews.com/chicago/ FACEBOOK: https://www.facebook.com/cbschicago X (TWITTER): https://twitter.com/CBSchicago GET THE CBS 2 NEWS APP: https://apps.cbslocal.com/chicago/ ----------------------------------------------------------------------------- CBS 2 News Chicago brings you breaking news, weather, compelling exclusive content and award-winning investigative reports from the CBS 2 Investigators. Subscribe to CBS 2 News Chicago on YouTube : null CBS 2 NEWS 24/7 LIVESTREAM: https://www.cbsnews.com/chicago/live/ CBS 2 NEWS ON PLUTO TV: https://pluto.tv/en/live-tv/62cdc75b1a1cbd0007ed45dc?gclid=CjwKCAjw0N6hBhAUEiwAXab-TbSSi4Fh_IPmF_dWkGjJt7KM9K2wzqpWTwK3NUIppzjF5uEMvbt1xhoCfYIQAvD_BwE CBS 2 NEWS WEBSITE: https://www.cbsnews.com/chicago/ FACEBOOK: https://www.facebook.com/cbschicago X (TWITTER): https://twitter.com/CBSchicago GET THE CBS 2 NEWS APP: https://apps.cbslocal.com/chicago/