Brazil prosecutor brings new graft charges against Senate head

Brazil's top prosecutor brought new charges against Senate President Renan Calheiros on Monday, accusing him of taking part in corruption at state oil company Petrobras and asking the Supreme Court to remove him from office. Prosecutor General Rodrigo Janot's request comes just a week after Calheiros was nearly removed in a separate embezzlement case. Janot alleges that Calheiros received part of a donation of 800,000 reais (£188,894) in 2010 from an oil and gas contractor in return for ke