After the partition of India in 1947 Moni Singh assumed the leadership of communist movement in East Bengal. At this stage he once again joined the Hajang peasants of Mymensingh and started a movement for the abolition of Tanka system. As this turned into an armed uprising, the government of Pakistan abolished the Tanka system in 1951. At the same time an warrant of arrest was issued against Moni Singh and all his movable and immovable properties were confiscated.