▁ 1 9 0 7 ▁for ▁the ▁attempted ▁murder ▁of ▁a ▁factory ▁director ▁in ▁Lib au , ▁but ▁was ▁later ▁acqu itted ▁by ▁the ▁R iga ▁military ▁court ▁in ▁ 1 9 0 8 . ▁Peters s ▁em igr ated ▁to ▁England ▁and ▁lived ▁in ▁London ▁where ▁he ▁was ▁a ▁member ▁of ▁the ▁London ▁Group ▁of ▁the ▁Social ▁Dem ocracy ▁of ▁Lat via ▁and ▁of ▁the ▁British ▁Social ist ▁Party . ▁ ▁The ▁Sie ge ▁of ▁Sid ney ▁Street ▁ ▁Peters s ▁was ▁a ▁first ▁cousin ▁of ▁Fritz ▁S va ars , ▁a ▁Lat v ian ▁an arch ist , ▁who ▁was ▁sus pected ▁of ▁sab ot age , ▁rob ber y ▁and ▁of ▁the ▁mur ders ▁of ▁a ▁shop keeper ▁and ▁a ▁polic eman ▁during ▁the ▁ 1 9 0 5 ▁revolution , ▁and ▁was ▁arrested ▁and ▁tort ured ▁in ▁R iga , ▁but ▁escaped ▁early ▁in ▁ 1 9 0 6 . ▁He ▁moved ▁to ▁London , ▁and ▁was ▁one ▁of ▁a ▁gang ▁who ▁tried ▁to ▁rob ▁a ▁j ew eler ' s ▁shop ▁in ▁H ounds d itch , ▁in ▁December ▁ 1 9 1 0 . ▁C aught ▁in ▁the ▁act , ▁they ▁killed ▁three ▁un ar med ▁police ▁officers . ▁S va ars ▁and ▁a ▁fellow ▁an arch ist ▁were ▁trac ed ▁to ▁a ▁house ▁in ▁Sid ney ▁Street ▁in ▁January ▁ 1 9 1 1 , ▁and ▁opened ▁fire ▁on ▁the ▁police , ▁setting ▁off ▁the ▁Sie ge ▁of ▁Sid ney ▁Street ▁which ▁ended ▁with ▁the ▁death