in 1942, Adhikari took part in the Quit India movement and was arrested by the British colonial authorities and jailed along with other politicians.

In 1957/58 Man Mohan Adhikari participated in the first democratically held Parliamentary Elections in Nepal only halfheartedly, since he was keen on broadening his organization, while he had already become a key figure in the Communist Movement in the country.

Koirala was sacked and the elected Parliament was dissolved by King Mahendra Bir Bikram Shah Deva citing several reasons.

Man Mohan, who was then in his home town of Biratnagar, Morang was arrested and lodged in jail by Koshi Zonal Commissioner Damodar Shumshere JB Rana.

While he was in custody, the then democratically elected leader of Dharan Municipality Yagya Prasad Acharya, Secretary of the then Nepal Communist Party Sunsari District Committee was entrusted by Man Mohan Adhikari to negotiate with the government authority for the release of communist leaders and cadres from detention in Sunsari and Morang districts.

Acharya had several rounds of parleys with communist leaders Mohan Adhikari, Shailendra Kumar Upadhyaya, Radha Prasad Ghimire and others inside the jail and Zonal Commissioner Rana and Chief Administrator of Morang District Jeevan Lal Satyal.

This policy of Man Mohan was a key move for the re-invigoration and expansion of the communist party in Eastern Nepal.