On January 21, 1945 the village was burned by Waffen-SS anti-partisan unit Edelweiss with help of Heimatschutz unit. 84 inhabitants of the village were killed (including 36 children), all of 132 houses and buildings were destroyed. Numerous victims were burned alive in their own houses. Nazi soldiers raided the village and expelled the rest of the inhabitants out of the village, they also shot all of the cattle. Considering the way of accomplishing, not the amount of casualties, this was one of the most brutal war crimes committed on the Slovak territory during World War II.
The records for genealogical research are available at the state archive "Statny Archiv in Banska Bystrica, Nitra, Slovakia"
- Roman Catholic church records (births/marriages/deaths): 1759-1920 (parish A)
- Surnames of living people in Klak
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