On the night of May 26, 2015, 70-year-old Gregory Weiland was working the overnight shift as a cashier at a Grand Forks Walmart when an individual entered the store and opened fire, fatally wounding him. The shooter, identified as 21-year-old Marcell Willis, also shot and wounded 47-year-old Lisa Braun, the overnight grocery general manager, and then took his own life. An autopsy found Willis had a blood-alcohol level of 0.19 percent at the time of the incident.

Investigators determined Willis planned and carried out the attack alone; with the shooter deceased, the police closed their investigation. Memorial services for Gregory Weiland were held at St. Michael’s Catholic Church and he was buried at St.

Bernard’s Catholic Cemetery in Thief River Falls, Minnesota.