In September of the same year, he was released from Liepāja prison and ordered to stay at his father's house in "Bušupos" of Tāšu Padure parish.

In the magazines he managed, he printed articles on Marxist philosophy, etc., as well as literary works and poems, which were sent to Russia and Latvia as illegal literature through the port of Liepāja.

During this time, Roziņš's historical reflection "Latvian Peasant" and the translation of Marx and Engels' The Communist Manifesto were written.

After Iskolat was disbanded in March 1918, Roziņš worked in the People's Commissariat of National Affairs of the Russian Communist Party in Moscow, then returned to Riga, where he was commissar of agriculture in the government of the Latvian Socialist Soviet Republic.

[3] Fricis Roziņš died in Luznava, Rēzekne district, on 7 May 1919, of pulmonary tuberculosis and was buried in Riga's Brothers' Cemetery.