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Juhani Aataminpoika | |
|---|---|
 | |
| Born | Johan Adamsson 31 July 1826 |
| Died | September 1854 (aged 28) |
| Other names | "Kerpeikkari" |
| Conviction(s) | Murder |
| Criminal penalty | Death; commuted to life imprisonment plus 40 lashes |
| Details | |
| Victims | 12 |
Span of crimes | October – November 1849 |
| Country | Finland |
Date apprehended | 20 November 1849 |
Juhani Aataminpoika (Finnish pronunciation: [ˈjuhɑni ˈɑːtɑminˌpoi̯kɑ]; born 31 July 1826 in Vesivehmaa, Asikkala – September 1854 in Suomenlinna), alias Kerpeikkari (Finnish: [ˈkerpei̯kːɑri]), was a Finnish serial killer. He killed 12 people in southern Finland between October and November of 1849. He has been characterized as the first serial killer in Finland.