Crime Library: Criminal Minds and Methods
Most Notorious Murders in Your State
Oklahoma: Edmond Post Office Massacre
Oklahoma: Edmond Post Office Massacre
Killed: 14 + Self; Injured; 6

In the August 20, 1986 case that coined the phrase "going postal," mail carrier Patrick Sherrill (pictured) opened fire on co-workers at the Post Office in Edmond. Sherrill, who had reportedly been given a warning by supervisors for making late deliveries the day before the killings, concluded the 20-minute shooting spree by killing himself.
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