The police restored a mild lathi-charge after Congress and SDPI party workers clashed in front of the polling station at Harekala on Tuesday, December 22.
An argument broke out between Congress leader Tara Yadav and party's National Secretary Sachin Naik on Saturday during a party meeting in Deoria ahead of the by-elections in the state.
The historical conflict between Azerbaijan and Armenia over breakaway region Nagorno-Karabakh region dates back to 1921 when the Soviet Union forcibly merged the predominantly ethnic Armenian region with Azerbaijan.