Eaton Township Weis Market shooting CCTV (unreleased CCTV video of shooting, 2017)
From The Lost Media Wiki
In the "suicide tapes" of Randy Stair, perpetrator of the Eaton Township Weis Market shooting, Stair stated he wished for scenes of the event to be caught on the many CCTV cameras within his workplace. Stair is at one point seen on one of the cameras "standing behind [the only survivor] as she worked for about five seconds before she proceeded to the next aisle." -Wikipedia. There are some on the /r/masskillers subreddit who are attempting to obtain the CCTV videos through FOIA requests.