In the early hours on the morning of June 8, 2017, employees at a Weis Markets supermarket in Eaton Township, Pennsylvania, were stocking and closing the store for the night. Shortly before 1:00 a.m., 24-year-old Randy Stair barricaded the exits of the store and proceeded to shoot and kill three of his co-workers before fatally shooting himself

Randy Stair, 24, arrived for his late-night shift at Weis Markets in Eaton Township, Pennsylvania (just south of Tunkhannock), on the evening of June 7, 2017, during closing time at approximately 11:00 p.m. Stair went to the back of the store to the crew area and blocked an emergency exit at the far back of the store. He then continued with his duties, stocking shelves and cleaning up from the previous day. At 12:10 a.m., he sent out links to multiple files and videos which detailed his plans via his Twitter account; these files were labeled "Journal", "Suicide Tapes", and "Digital set"

Stair then went back to the crew area in the rear of the store, blocked the remaining exits, then locked the automatic doors at the main entrance to the store. He then pulled out two pistol grip pump-action shotguns that he had concealed in a duffel bag and walked around the store and killed three employees—Victoria Brong, Brian Hayes, and Terry Lee Sterling. He then approached another coworker, Kristan Newell, who had not heard the shooting due to her listening to music with headphones on while she was labeling items and stocking shelves near the rear of the store. Stair was seen on CCTV surveillance camera footage standing behind Newell as she worked for about five seconds before she proceeded to the next aisle Outakes from explore with us.