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A serial killer is typically a person who murders three or more people, with the murders taking place over more than a month and including a significant period of time between them.[1][2] The Federal Bureau of Investigation (FBI) defines serial killing as "a series of two or more murders, committed as separate events, usually, but not always, by one offender acting alone".[2][3]
- ^ Ronald M. Holmes; Stephen T. Holmes (1998). Contemporary Perspectives on Serial Murder. SAGE Publications. p. 1. ISBN 0-7619-1421-8. Retrieved June 15, 2016.
Serial murder is the killing of three or more people over a period of more than 30 days, with a significant cooling-off period between the murders [...] The baseline number of three victims appears to be most common among those who are the academic authorities in the field. The time frame also appears to be an agreed-upon component of the definition.
- ^ a b Burkhalter Chmelir 2003, p. 1.
- ^ Morton 2005, p. 4, 9.