said by joeblow3:"serial killer" one killing does not make him a serial killer.
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en.wikipedia.org/wiki/Lu ··· e_crimesPolice in Gatineau are investigating possible ties between Magnotta and the 2011 murder of Valerie Leblanc in their city due to the "distinct nature" of both crimes.[110][111] On June 8, the Los Angeles Police Department announced they were in contact with Montreal police to determine if Magnotta was involved in the unsolved murder and decapitation of Hervey Medellin
And note I said
suspected serial killer.