Kammala jumla mai zuwa: An kama shi a 1924, 1933, da 1938, kuma an yanke masa hukuncin ɗaurin kurkuku; musamman, lauyoyi sun sami nasarar kare Luca da aka biya tare da kuɗin Red Aid a lokacin shari'ar 1927 a Cluj (inda aka yanke wa Boris Stefanov hukunci), kuma Ion Gheorghe Maurer ne ya wakilce shi a lokacin shari'arsa ta 1938. Ya kasance yana zaman kurkuku a Cernăuţi, bayan da aka same shi da laifin yunkurin tsallaka iyaka tsakanin Masarautar Romania da SSR na Ukraine, lokacin da Tarayyar Soviet ta haɗu da Arewacin Bukovina ("duba
Soviet mamaye Bessarabia da Arewacin Bukovina").