"The man returned a few minutes later and started shooting. He shot my dad three times and my dad was able to shoot back and shot him five times," he said.

Arruda, who was hit twice, has died from his injuries, according to Parana state civil police.

Guaranho was also shot and is currently hospitalized in critical condition, police said.

It wasn't the first violent episode associated with the country's increasing political polarization.

Just one day before the shooting, two explosives were thrown into a crowd at a rally for Lula, as da Silva is popularly known.

At another rally, Lula was also heard thanking a local councilman who was arrested for attempted murder against a man who insulted the former president in 2018.

"The man returned a few minutes later and started shooting. He shot my dad three times and my dad was able to shoot back and shot him five times," he said.

Arruda, who was hit twice, has died from his injuries, according to Parana state civil police.

Guaranho was also shot and is currently hospitalized in critical condition, police said.

It wasn't the first violent episode associated with the country's increasing political polarization.

Just one day before the shooting, two explosives were thrown into a crowd at a rally for Lula, as da Silva is popularly known.

At another rally, Lula was also heard thanking a local councilman who was arrested for attempted murder against a man who insulted the former president in 2018.