Complex sentence: He joined the Communist Party in the late 1950s as state secretary, During these he was imprisoned in Tihar jail with Dr. Ram Manohar Lohia, Mani Ram Bagri and other socialist leaders.
Split into simpler sentences: He joined the Communist Party in late 1950s as state secretary. He was imprisoned in Tihar jail with Dr. Ram Manohar Lohia, Mani Ram Bagri and other socialist leaders.