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Brazil's electoral court is investigating images that went viral on social media of supporters of far-right candidate Jair Bolsonaro bringing guns to their polling stations.
One image shows a gun on the top of the electronic voting machine and Bolsonaro's face on the screen in a school of Sao Joao de Meriti, outside Rio de Janeiro. Another shows a voter using his gun to press buttons in the machine to vote for Bolsonaro in the southern Brazilian city of Cachoeiro do Sul.
The two images quickly spread in WhatsApp groups, which are heavily used by Bolsonaro supporters to spread their messages.
Guns are not allowed in polling stations in Brazil.