Brazil's opposition calls for Rousseff probe

Sao Paulo - Brazil's main opposition party said on Tuesday it would call on the Supreme Court to investigate President Dilma Rousseff's involvement in a corruption scheme at state-run oil firm Petroleo Brasileiro SA .

The motion comes a day after prosecutors charged the treasurer of Rousseff's Workers' Party, Joao Vaccari, with corruption and money laundering, saying that Vaccari was aware that donations he sought for the party were bribe money stolen from Petrobras.

Rousseff has denied knowing about corruption at Petrobras as chairwoman of its board from 2003 to 2010 when much of the alleged graft occurred and has urged a thorough investigation.