Rząśnik, Ostrów Mazowiecka County

Rząśnik is a village in the administrative district of Gmina Stary Lubotyń, within Ostrów Mazowiecka County, Masovian Voivodeship, in east-central Poland.

History
During World War II, in summer 1941, about 2,600 Jews from nearby villages are murdered in mass executions perpetrated by an Einsatzgruppen.