Banks had been in prison since 1982 after shooting 14 people, and killing 13, including his own children, during a rampage in Wilkes-Barre. At time, it was considered one of the worst mass murders in American history. He was convicted of 12 counts of first-degree murder and one count of third-degree murder. Banks had been drinking at a party late at night before using an AR-15 rifle to start the rampage at his home.