The voting process under the by-election has been suspended at the Naya Kiran Secondary School polling center in Bharatpur Metropolitan City 11.
The voting had to be stopped as some tension arose at the voting station after the arrival of Rastriya Swatantra Party candidate Rabi Lamichhane.
The police had to use baton charges to contain the scene when his followers shouted slogans in support of the candidate, Lamichhane.
Representatives of the rest of the political parties have accused the candidate of violating the election code of conduct by carrying out sloganeering.
Following the incident, candidate Lamichhane has stated that he is not in a position to go to the polling centre immediately after the scandal.
On his Facebook Live, he said, "We don't believe in clashes and hooliganism," and it was just a general welcome.
He has also urged other parties to exercise restraint, as residents of Chitwan are closely watching.