On April 22, 1974, Pierre, Andrews, Roberts, and three other men drove in two vans to the Hi-Fi Shop at 2323 Washington Boulevard, Ogden, just before closing time. Three of the group then entered the shop brandishing handguns, while Roberts and another man remained with the vehicles. Two employees, Stanley Walker, aged 20, and Michelle Ansley, aged 18, were in the store at the time and were taken hostage. Pierre and Andrews took the two into the store's basement and bound them. The gang then began robbing the store.