Brazil politician throws grenades at police in Rio de Janeiro state- PublishedA Brazilian politician is in custody after throwing grenades at police officers who came to his house in Rio de Janeiro state to arrest him.Roberto Jefferson, an ally of far-right President Jair Bolsonaro, wounded two officers before surrendering on Sunday.The two officers were wounded by shrapnel from a grenade during the attack in Comendador Levy Gasparian, north of the state capital Rio de Janeiro.Mr Jefferson, the 69-year-old former leader of the PTB political party, also fired a number of shots from a rifle, shattering the windshield of a police car.Political tensions are high in Brazil ahead of Sunday's presidential election run-off between Mr Bolsonaro and left-winger Luiz Inácio Lula da Silva."