The Święciany or Švenčionys massacre (Polish: Zbrodnia w Święcianach) was a series of mass murders committed against Poles in Święciany (now Švenčionys, Lithuania) and its surroundings on 19–21 May 1942 by Lithuanian collaborators, mainly the Lithuanian Security Police (known by its Lithuanian name Saugumas), on the German orders. As a result between 400 and 1,200 people were killed.
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