The Kulen Vakuf massacre was committed during World War II by Communist-led Yugoslav Partisans and groups of non-communist Serb rebels (including Chetniks), killing 1,000 to 3,000 Ustaše prisoners as well as Muslim, and a smaller number of Croat (around 100 killed), civilians in early September 1941 in Kulen Vakuf, part of the Independent State of Croatia (present-day Federation of Bosnia and Herzegovina). The local Ustaše had previously massacred Serbs in Kulen Vakuf and surrounding villages.
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