The arrests were made following a tip-off to the police that two men were coming to the city from Agra to supply illegal arms, that could be used to influence polling, said Mathura's Senior Superintendent of Police, Mohit Gupta.
Viresh Kumar and Radhaswami, both residents of Bihar, were arrested near Bharatpur.
Two of their accomplices, however, managed to escape, police said.
A rifle, four pistols, one revolver, a few locally-made guns and cartridges have been seized from their vehicle.
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