▁and ▁the ▁closing ▁of ▁Lith uan ian ▁organizations , ▁which ▁had ▁a ▁total ▁of ▁ 1 , 3 0 0 ▁members . ▁The ▁New ▁York ▁Times , ▁reporting ▁on ▁renew ed ▁host ilities ▁a ▁year ▁later , ▁described ▁the ▁ 1 9 1 9 ▁Se j ny ▁events ▁as ▁a ▁violent ▁occupation ▁by ▁the ▁Pol es , ▁in ▁which ▁the ▁Lith uan ian ▁inhabitants , ▁teachers , ▁and ▁religious ▁minister s ▁were ▁m alt re ated ▁and ▁exp elled . ▁Polish ▁historian ▁Ł oss owski ▁notes ▁that ▁both ▁sides ▁mist re ated ▁the ▁civil ian ▁population ▁and ▁ex agger ated ▁reports ▁to ▁gain ▁internal ▁and ▁foreign ▁support . ▁ ▁The ▁u pr ising ▁contributed ▁to ▁the ▁d eter ior ation ▁of ▁the ▁Polish – L ith uan ian ▁relations ▁and ▁further ▁disc ou rag ed ▁the ▁Lith u ani ans ▁from ▁joining ▁the ▁proposed ▁Mi ędz ym or ze ▁feder ation . ▁The ▁Se j ny ▁U pr ising ▁do omed ▁the ▁Polish ▁plan ▁to ▁over throw ▁the ▁Lith uan ian ▁government ▁in ▁a ▁coup ▁d ' état . ▁After ▁the ▁u pr ising , ▁the ▁Lith uan ian ▁police ▁and ▁intelligence ▁intens ified ▁their ▁investigation ▁of ▁Polish ▁sympath izers ▁and ▁soon ▁un cover ed ▁the ▁planned ▁coup . ▁They ▁made ▁mass ▁arr ests ▁of ▁Polish ▁activ ists ▁from ▁August ▁ 2 7 ▁to ▁the ▁end ▁of ▁September ▁ 1 9 1 9 . ▁During ▁the ▁investig ations , ▁lists ▁of ▁P MO ▁supp or ters ▁were ▁found ; ▁law ▁enfor cement ▁completely