TIMELINE-Key moments in Brazil's Petrobras corruption probe
By Caroline Stauffer
Aug 14 (Reuters) - Prosecutors and federal police in Brazil have unearthed the country's largest-ever corruption scandal by linking a ring of black-market money changers to a price-fixing and political kickback scheme at state-run oil company Petrobras .
Executives from two dozen engineering firms are accused of inflating the value of contracts and funneling the excess funds into their own bank accounts and to political parties, including President Dilma Rousseff's Workers' Party.
Below are key moments in the investigation, which prosecutors in the southern city of Curitiba expect to continue for at least two more years. An investigation into politicians is also advancing in Brasilia.
March 20, 2014
Federal police arrest the former head of Petrobras' refining and supply department, Paulo Roberto Costa, the result of an investigation that started when they noticed Costa had been given a Range Rover car by convicted black-market money changer Alberto Youssef.
Aug 22, 2014 Continuación...